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

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

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

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

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