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