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