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

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

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

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

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