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

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

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

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

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