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