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