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