Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Welsh an-
Proto-Brythonic *an- (inherited)
Proto-Celtic *an- (inherited)
Proto-Celtic *ande- (inherited)
Proto-Celtic *ando- (mention)
Proto-Indo-European *n̥- (inherited)
Cornish an- (cognate)
Middle Welsh an- (inherited)

English awning (cognate)
Welsh annedd (mention)
Welsh gwrando (compound)
Welsh anghydfod (affix)
Welsh aneiriol (affix)
Welsh anffodus (prefix)
Welsh anffodus (affix)
Welsh dangos (compound)
Welsh anodd (affix)
Welsh anrheg (prefix)
Welsh anrheg (prefix)
Welsh annwyl (affix)
Welsh annog (affix)
Welsh amrwd (affix)
Welsh ansawdd (affix)
Welsh annerch (affix)
Welsh anghyflawn (affix)
Welsh anferth (affix)
Welsh anwedd (affix)
Welsh amhenodol (affix)
Welsh anghydradd (affix)
Welsh anghyfartal (affix)
Welsh anesboniadwy (affix)
Welsh anabl (affix)
Welsh anhysbys (affix)
Welsh anadnabyddus (affix)
Welsh anghymreig (compound)
Welsh anghydweld (affix)
Welsh anghydwelediad (affix)
Welsh anghytundeb (affix)
Welsh anghytûn (affix)
Welsh anghytuno (affix)
Welsh anghydsynio (affix)
Welsh anghytgord (affix)
Welsh anghyd-weld (affix)
Welsh anobaith (affix)
Welsh anobeithiol (affix)
Welsh anobeithio (affix)
Welsh anghyflogaeth (affix)
Welsh annherfynol (affix)
Welsh anuniongyrchol (affix)