MasterLock Recovery

Have a old master lock lying around the house? Do you still remember the third number combo but not the other two? Well with this code you can finally figure out your old combination.
Upon working on a different project,I somehow saw my old two master-locks and decided to create a quick code based on the formula. Using only the third number you can sucessfully unlock the combination lock.

Simply Enter the third number that you remember and the combinations will be narrowed down to around 100.
Going down the list starting with
2-4-30
2-8-30
2-12-30
2-16-30 ...
down to the end of the 2nd row.
6-4-30
6-8-30..etc.
My combination to open my master lock was 30-36-30.
and the other was 14-0-30 (40 becomes 0)