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