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

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

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

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

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