Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh o
Proto-Brythonic *o (inherited)
Proto-Celtic *ɸo (inherited)
Welsh ò (link)
Welsh ó (link)
Welsh ô (link)
Welsh ö (link)
Welsh n (link)
Welsh p (link)
Welsh oe (link)
Welsh oi (link)
Welsh ou (link)
Welsh ow (link)
Welsh oy (link)
Welsh efô (mention)
Welsh ef (mention)
Welsh e (mention)
Welsh fo (mention)
Welsh fe (mention)
Welsh (mention)
Welsh e (mention)
Welsh ef (mention)
Welsh od (link)
Welsh os (link)
Welsh oni (link)
Proto-Indo-European *h₂pó (inherited)

Welsh e (mention)
Welsh e (mention)
Welsh uno (suffix)
Welsh na (mention)
Welsh ei (mention)
Welsh fo (mention)
Welsh oni (compound)
Welsh ond (compound)
Welsh oherwydd (compound)
Welsh rhwygo (suffix)
Welsh ar hyn o bryd (compound)
Welsh hudo (suffix)
Welsh swyno (suffix)
Welsh o blith (affix)
Welsh o dan (compound)
Welsh o hyn allan (compound)
Welsh yn hyn o beth (compound)
Welsh o flaen (compound)
Welsh obeutu (compound)