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

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

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

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

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