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

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

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

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

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