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