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