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

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

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

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

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