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

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

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

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

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