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