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