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