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