Point 125 in CLAUSES/conditional is defined as
‘If it weren’t / were not for’ + noun phrase to introduce conditions in formal contexts. past simple
iWeb doesn’t allow a search for **** to the right even on a premium licence.
1 IF IT WERE N’T FOR 9682
2 IF IT WERE NOT FOR 4645
COCA does allow for long searches:
1 IF IT WERE NOT FOR THE FACT 18