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