(0 21 2)(1 7 3)(4 18 17 11 6)(5 10 8)(9 15 12)(13 19 14)(16 22 20)
ALLOWS (11/8)-SEQUENCE
1: (1 7 9)

(0 21 2)(1 15 12 9 3)(4 18 17 11 6)(5 10 8)(7)(13 19 14)(16 22 20)
2: (5 10 8)

(0 21 2)(1 15 12 9 3)(4 18 17 11 6)(5)(7)(8)(10)(13 19 14)(16 22 20)
3: (4 18 6)

(0 21 2)(1 15 12 9 3)(4)(5)(6 17 11)(7)(8)(10)(13 19 14)(16 22 20)(18)
4: (3 12 9)

(0 21 2)(1 15 12)(3)(4)(5)(6 17 11)(7)(8)(9)(10)(13 19 14)(16 22 20)(18)