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

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

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

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

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