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

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

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

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

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