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

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

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

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

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