Not much to go on with just one item of test data

So this DEFINITELY works on the example you've provided.

=MID(A1,3,6)&","&MID(A1,15,6)&","&MID(A1,27,6)&","&MID(A1,39,6)

You may find this doesnt work on other data in which case you'll need to supply any variations of your initial example but you should have realised that in the first place.