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

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

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

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

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