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

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

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

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

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