Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Irish ro-
← Old English fram (cognate)
← Proto-Celtic *ɸro- (derived)
← Ancient Greek πρό (cognate)
← Proto-Indo-European *pro- (derived)
← Proto-Indo-European *per- (mention)
← Latin prō (cognate)

→ Irish do (inherited)
→ Irish -r (inherited)
→ Irish ró- (inherited)
→ Irish tarlaigh (mention)
→ Irish tairbhe (mention)
→ Irish ráinig (mention)
→ Irish rigim (mention)
→ Scottish Gaelic do (inherited)
→ Scottish Gaelic tairg (affix)
→ Scottish Gaelic tàrlaidh (mention)
→ Scottish Gaelic tairbhe (mention)
→ Manx row (mention)
→ Old Irish acht (mention)
→ Old Irish rubai (affix)
→ Old Irish rubai (affix)
→ Old Irish turcbál (affix)
→ Old Irish dobeir (affix)
→ Old Irish foceird (mention)
→ Old Irish conricc (affix)
→ Old Irish doáirci (affix)
→ Old Irish dofich (mention)
→ Old Irish dofich (mention)
→ Old Irish rocluinethar (affix)
→ Old Irish roicc (affix)
→ Old Irish rosaig (affix)
→ Old Irish torbae (affix)
→ Old Irish adroilli (affix)
→ Old Irish doróscai (affix)
→ Old Irish immurgu (mention)
→ Old Irish doruimnethar (affix)
→ Old Irish doaurchain (mention)
→ Old Irish corop (affix)
→ Old Irish doérnai (affix)
→ Old Irish dorochoíni (affix)