[daniel992]

could this be anything? There is a full stop after every 3 numbers
5,1:4.

1,2:8.

1,3:2.

3,3:2.

4,3:3.

7,3:3.

1,5:3.

4,5:9.

5,5:2.

7,5:4.

7,6:6.

3,7:3.