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