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

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

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

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

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