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