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

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

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

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

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