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

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

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

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

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