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