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