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

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

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

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

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