Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh a
Proto-Brythonic *(h)a (inherited)
Welsh à (link)
Welsh á (link)
Welsh â (link)
Welsh ä (link)
Welsh af (link)
Welsh ag (cognate)
Welsh ac (link)
Proto-Indo-European *ad-gʰe (inherited)
Cornish ha (cognate)
Old Welsh ha (inherited(cy/wlm))
Old Welsh a (inherited)

English cant (link)
Breton ha (cognate)
Welsh â (mention)
Welsh thi (mention)
Welsh efo (compound)
Welsh hefo (compound)
Welsh efallai (compound)
Welsh Jac a'i Wagen (compound)
Welsh hyn a hyn (compound)
Welsh deg a thrigain (compound)
Welsh deg a phedwar ugain (compound)
Welsh pedwar ar bymtheg a phedwar ugain (compound)
Welsh pedwerydd ar bymtheg a phedwar ugain (compound)
Scottish Gaelic a (cognate)
Cornish ha (cognate)
Old Irish a (cognate)
Old Irish a/Old Irish (cognate)