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

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

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

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

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