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

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

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

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

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