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

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

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

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

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