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

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

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

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

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