Where does “czwóreczka” come from?

czwóreczka (Polish) comes from Polish czwórka, from Polish -ka, from Old Polish -ka, from Proto-Slavic -ъka, from Proto-Indo-European -kos — Creates deadjectival and desubstantival...

Ancestry of “czwóreczka”, step by step

StepLanguageWordMeaning
1Polishczwórkafour
2Polish-kafeminine noun suffix; diminutive noun suffix;...
3Old Polish-kafeminine noun suffix
4Proto-Slavic-ъkaDenominal, forms diminutives; Deadjectival,...
5Proto-Indo-European-kosCreates deadjectival and desubstantival...
Every word from Proto-Indo-European -kos →Every word from Polish -ka →Every word from Proto-Slavic -ъka →