Drilling patterns for MDF

Set of 3 drilling patterns. They are metrical, mostly in 10x10mm matrix.
A helpful accessories for drilling to wood, MDF, plywood, ... .
As one of benefits, it is saving time for measuring the holes on wood.
I use usually 2mm drill to make hole for screw. usually I use this tool for joining wood plates, assembling edge(s) etc.

There are two side patterns (one bigger and one smaller), they have middle point marked with "V".
And last one is corner drilling pattern. Fits to 90° corners.