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