Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh pymtheg
Welsh pump (affix)
Welsh deg (affix)

English bumfit (cognate)
Welsh pymthegfed (affix)
Welsh pymthegnos (compound)
Welsh un ar bymtheg (compound)
Welsh dau ar bymtheg (compound)
Welsh pedwar ar bymtheg (compound)
Welsh unfed ar bymtheg (compound)
Welsh ail ar bymtheg (compound)
Welsh pedwerydd ar bymtheg (compound)
Welsh dwy ar bymtheg (compound)
Welsh pedair ar bymtheg (compound)
Welsh pedwar ar bymtheg a phedwar ugain (compound)
Welsh pedwerydd ar bymtheg a phedwar ugain (compound)