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

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

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

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

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