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

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

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

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

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