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