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

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

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

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

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