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

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

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

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

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