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

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

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

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

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