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