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

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

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

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

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