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

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

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

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

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