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

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

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

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

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