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