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

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

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

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

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