(0 18 7 5 2)(1 4 3)(6 11 8)(9 20 19 16 14)(10 15 12)(13 21 17)
ALLOWS (11/8)-SEQUENCE
1: (0 6 7)
(0 5 2)(1 4 3)(6 18 7 11 8)(9 20 19 16 14)(10 15 12)(13 21 17)
2: (7 11 18)
(0 5 2)(1 4 3)(6 18 8)(7)(9 20 19 16 14)(10 15 12)(11)(13 21 17)
3: (9 20 14)
(0 5 2)(1 4 3)(6 18 8)(7)(9)(10 15 12)(11)(13 21 17)(14 19 16)(20)
4: (10 15 12)
(0 5 2)(1 4 3)(6 18 8)(7)(9)(10)(11)(12)(13 21 17)(14 19 16)(15)(20)