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

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

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

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

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