Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Proto-Slavic *(j)azъ

→ English azbuka (derived)
→ Belarusian я (inherited)
→ Bulgarian аз (inherited)
→ Kashubian jô (inherited)
→ Old Church Slavonic азъ (inherited)
→ Lithuanian aš (cognate)
→ Latvian es (cognate)
→ Macedonian ја (inherited)
→ Macedonian јас (inherited)
→ Macedonian јазе (inherited)
→ Macedonian јаска (inherited)
→ Old East Slavic ꙗзъ (inherited)
→ Ossetian ӕз (cognate)
→ Polish ja (inherited)
→ Polish jo (derived)
→ Russian я (inherited)
→ Russian аз (inherited)
→ Rusyn я (inherited)
→ Serbo-Croatian ја (inherited)
→ Serbo-Croatian jaz (inherited)
→ Slovene jaz (inherited)
→ Silesian jo (inherited)
→ Ukrainian я (inherited)
→ Old Novgorodian ѧ (inherited)
→ Old Novgorodian ѧꙁо (inherited)