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

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

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

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

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