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