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

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

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

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

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