Which preposition to use with om

At Occurrences 2%

Om At and the Gryf.

per Occurrences 1%

en cascune cose, si cum on per dreict 4. in chiaduna chiossa, shi seho l'hom per drett 5. in caduna cosa, si com om per drett 1. suum fratrem salvare debet, in hoc quod ille mihi 2. son fardre salvar dist, in o quid il me 3. son frere salver dist, en o qui il me 4.

Which preposition to use with  om