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

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

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

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

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