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applt to is the most popular phrase on the web.

apply in 130,100,000 results on the web	applt to 1272,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
border situations. border cooperation actions. This fundamental principle appears not to apply in Croatia. This figure does not apply in regenerative braking mode. Such restrictions may apply in particular to participation in award procedures in the case of cross As a result, the latter may be inadmissible or impossible to apply in cross This Regulation should apply in the transport sector. Article 5(2) of Regulation (EEC) No 2808/98 should apply in this case by analogy.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

apply in

130,100,000 results on the web

applt to

1272,000,000 results on the web

More popular!

border situations.
border cooperation actions.
This fundamental principle appears not to apply in Croatia.
This figure does not apply in regenerative braking mode.
Such restrictions may apply in particular to participation in award procedures in the case of cross
As a result, the latter may be inadmissible or impossible to apply in cross
This Regulation should apply in the transport sector.
Article 5(2) of Regulation (EEC) No 2808/98 should apply in this case by analogy.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.