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

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

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

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

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