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