cum / com / con / co<br />ob / obs / o / os<br />praeter<br />sub/sus/su<br />subter<br />trans/tra<br />amb/am/an<br />au<br />dis/di/dir<br />ne<br />neg<br />por<br />adversum / adversus / ad ...versus<br />circa<br />citra/cis<br />erga<br />penes<br />praeter<br />prope/propius/proxime<br />secundum<br />supra<br />versus<br />coram<br />tenus<br /><br /><br />So, I think we have the most frequent ones. Although, some of these can only be used as prepositions, others only as prefixes and others as both. E. g.: au (aufugere) or amb/am/an (ambire, amplecti, anquirere) can only be used as a prefix. But you figuered that out for yourself.

I hope I helped you. What do you need this for anyway? <br /><br />Greetz<br /><br />Philippus Moerus.