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

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

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

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

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