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