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

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

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

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

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