a       0 +      0/2 +      0/2,      0@e      0_u   (list is empty)
b       0 +      0/2 +      0/2,      0@e      0_u   (list is empty)
-       0 +      1/2 +      0/2,      0@e      0_u   v0..0  | <0> | ... | <0> |
+       0 +      1/2 +      0/2,      0@e      0_u   v0..0  | <0> 1 | ... | <0> 1 |
-       0 +      2/2 +      0/2,      0@e      0_u   v0..1  | <0> 1 | ... | 0 <1> |
+       0 +      2/2 +      0/2,      0@e      0_u   v0..1  | <0> 1 2 | ... | 0 <1> 2 |
-       0 +      3/2 +      0/2,      0@e      0_u   v0..2  | <0> 1 2 | ... | 0 1 <2> |
+       0 +      3/2 +      0/2,      0@e      0_u   v0..2  | <0> 1 2 3 | ... | 0 1 <2> 3 |
-       0 +      4/2 +      0/2,      0@e      0_u   v0..3  | <0> 1 2 3 | ... | 0 1 2 <3> |
+       0 +      4/2 +      0/2,      0@e      0_u   v0..3  | <0> 1 2 3 4 | ... | 0 1 2 <3> 4 |
-       0 +      5/2 +      0/2,      0@e      0_u   v0..4  | <0> 1 2 3 4 | ... | 0 1 2 3 <4> |
+       0 +      5/2 +      0/2,      0@e      0_u   v0..4  | <0> 1 2 3 4 5 | ... | 0 1 2 3 <4> 5 |
-       0 +      6/2 +      0/2,      0@e      0_u   v0..5  | <0> 1 2 3 4 5 | ... | 0 1 2 3 4 <5> |
+       0 +      6/2 +      0/2,      0@e      0_u   v0..5  | <0> 1 2 3 4 5 6 ... | 0 1 2 3 4 <5> 6 |
-       0 +      7/2 +      0/2,      0@e      0_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> |
+       0 +      7/2 +      0/2,      0@e      0_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> 7 |
-       0 +      8/2 +      0/2,      0@e      0_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> |
+       0 +      8/2 +      0/2,      0@e      0_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> 8 |
-       0 +      9/2 +      0/2,      0@e      0_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> |
+       0 +      9/2 +      0/2,      0@e      0_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> 9 |
c       0 +     10/2 +      0/2,      0@e      0_u   v0..9  | <0> 1 2 3 4 5 6 ... 3 4 5 6 7 8 <9> |
-       0 +     10/2 +      1/2,      0@e      1_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> 9 |
+       0 +     10/2 +      1/2,      0@e      1_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> |
-       0 +     10/2 +      2/2,      0@e      2_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> 8 |
+       0 +     10/2 +      2/2,      0@e      2_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> |
-       0 +     10/2 +      3/2,      0@e      3_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> 7 |
+       0 +     10/2 +      3/2,      0@e      3_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> |
-       0 +     10/2 +      4/2,      0@e      4_u   v0..5  | <0> 1 2 3 4 5 6 ... | 0 1 2 3 4 <5> 6 |
+       0 +     10/2 +      4/2,      0@e      4_u   v0..5  | <0> 1 2 3 4 5 | ... | 0 1 2 3 4 <5> |
-       0 +     10/2 +      5/2,      0@e      5_u   v0..4  | <0> 1 2 3 4 5 | ... | 0 1 2 3 <4> 5 |
+       0 +     10/2 +      5/2,      0@e      5_u   v0..4  | <0> 1 2 3 4 | ... | 0 1 2 3 <4> |
-       0 +     10/2 +      6/2,      0@e      6_u   v0..3  | <0> 1 2 3 4 | ... | 0 1 2 <3> 4 |
+       0 +     10/2 +      6/2,      0@e      6_u   v0..3  | <0> 1 2 3 | ... | 0 1 2 <3> |
-       0 +     10/2 +      7/2,      0@e      7_u   v0..2  | <0> 1 2 3 | ... | 0 1 <2> 3 |
+       0 +     10/2 +      7/2,      0@e      7_u   v0..2  | <0> 1 2 | ... | 0 1 <2> |
-       0 +     10/2 +      8/2,      0@e      8_u   v0..1  | <0> 1 2 | ... | 0 <1> 2 |
+       0 +     10/2 +      8/2,      0@e      8_u   v0..1  | <0> 1 | ... | 0 <1> |
-       0 +     10/2 +      9/2,      0@e      9_u   v0..0  | <0> 1 | ... | <0> 1 |
+       0 +     10/2 +      9/2,      0@e      9_u   v0..0  | <0> | ... | <0> |
D       0 +     10/2 +     10/2,      0@e     10_u   (list is empty)
d       0 +     10/2 +     10/2,      0@e     10_u   (list is empty)
e       0 + ? (rolling over)
f      10 + ? (rolling over)
g      10 +      0/2 +      0/2,      0@e      0_u   (list is empty)
a      10 +      0/2 +      0/2,      0@e      0_u   (list is empty)
b      10 +      0/2 +      0/2,      0@e      0_u   (list is empty)
-      10 +      1/2 +      0/2,      0@e      0_u   v0..0  | <0> | ... | <0> |
+      10 +      1/2 +      0/2,      0@e      0_u   v0..0  | <0> 1 | ... | <0> 1 |
-      10 +      2/2 +      0/2,      0@e      0_u   v0..1  | <0> 1 | ... | 0 <1> |
+      10 +      2/2 +      0/2,      0@e      0_u   v0..1  | <0> 1 2 | ... | 0 <1> 2 |
-      10 +      3/2 +      0/2,      0@e      0_u   v0..2  | <0> 1 2 | ... | 0 1 <2> |
+      10 +      3/2 +      0/2,      0@e      0_u   v0..2  | <0> 1 2 3 | ... | 0 1 <2> 3 |
-      10 +      4/2 +      0/2,      0@e      0_u   v0..3  | <0> 1 2 3 | ... | 0 1 2 <3> |
+      10 +      4/2 +      0/2,      0@e      0_u   v0..3  | <0> 1 2 3 4 | ... | 0 1 2 <3> 4 |
-      10 +      5/2 +      0/2,      0@e      0_u   v0..4  | <0> 1 2 3 4 | ... | 0 1 2 3 <4> |
+      10 +      5/2 +      0/2,      0@e      0_u   v0..4  | <0> 1 2 3 4 5 | ... | 0 1 2 3 <4> 5 |
-      10 +      6/2 +      0/2,      0@e      0_u   v0..5  | <0> 1 2 3 4 5 | ... | 0 1 2 3 4 <5> |
+      10 +      6/2 +      0/2,      0@e      0_u   v0..5  | <0> 1 2 3 4 5 6 ... | 0 1 2 3 4 <5> 6 |
-      10 +      7/2 +      0/2,      0@e      0_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> |
+      10 +      7/2 +      0/2,      0@e      0_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> 7 |
-      10 +      8/2 +      0/2,      0@e      0_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> |
+      10 +      8/2 +      0/2,      0@e      0_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> 8 |
-      10 +      9/2 +      0/2,      0@e      0_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> |
+      10 +      9/2 +      0/2,      0@e      0_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> 9 |
c      10 +     10/2 +      0/2,      0@e      0_u   v0..9  | <0> 1 2 3 4 5 6 ... 3 4 5 6 7 8 <9> |
-      10 +     10/2 +      1/2,      0@e      1_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> 9 |
+      10 +     10/2 +      1/2,      0@e      1_u   v0..8  | <0> 1 2 3 4 5 6 ... 2 3 4 5 6 7 <8> |
-      10 +     10/2 +      2/2,      0@e      2_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> 8 |
+      10 +     10/2 +      2/2,      0@e      2_u   v0..7  | <0> 1 2 3 4 5 6 ... 1 2 3 4 5 6 <7> |
-      10 +     10/2 +      3/2,      0@e      3_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> 7 |
+      10 +     10/2 +      3/2,      0@e      3_u   v0..6  | <0> 1 2 3 4 5 6 ... 0 1 2 3 4 5 <6> |
-      10 +     10/2 +      4/2,      0@e      4_u   v0..5  | <0> 1 2 3 4 5 6 ... | 0 1 2 3 4 <5> 6 |
+      10 +     10/2 +      4/2,      0@e      4_u   v0..5  | <0> 1 2 3 4 5 | ... | 0 1 2 3 4 <5> |
-      10 +     10/2 +      5/2,      0@e      5_u   v0..4  | <0> 1 2 3 4 5 | ... | 0 1 2 3 <4> 5 |
+      10 +     10/2 +      5/2,      0@e      5_u   v0..4  | <0> 1 2 3 4 | ... | 0 1 2 3 <4> |
-      10 +     10/2 +      6/2,      0@e      6_u   v0..3  | <0> 1 2 3 4 | ... | 0 1 2 <3> 4 |
+      10 +     10/2 +      6/2,      0@e      6_u   v0..3  | <0> 1 2 3 | ... | 0 1 2 <3> |
-      10 +     10/2 +      7/2,      0@e      7_u   v0..2  | <0> 1 2 3 | ... | 0 1 <2> 3 |
+      10 +     10/2 +      7/2,      0@e      7_u   v0..2  | <0> 1 2 | ... | 0 1 <2> |
-      10 +     10/2 +      8/2,      0@e      8_u   v0..1  | <0> 1 2 | ... | 0 <1> 2 |
+      10 +     10/2 +      8/2,      0@e      8_u   v0..1  | <0> 1 | ... | 0 <1> |
-      10 +     10/2 +      9/2,      0@e      9_u   v0..0  | <0> 1 | ... | <0> 1 |
+      10 +     10/2 +      9/2,      0@e      9_u   v0..0  | <0> | ... | <0> |
D      10 +     10/2 +     10/2,      0@e     10_u   (list is empty)
d      10 +     10/2 +     10/2,      0@e     10_u   (list is empty)
e      10 + ? (rolling over)
f      20 + ? (rolling over)
g      20 +      0/2 +      0/2,      0@e      0_u   (list is empty)