tygodnietydzieńtygodnioneThis plural form is used for numbers like: 1
tydzień
fewThis plural form is used for numbers like: n mod 10 in 2..4 and n mod 100 not in 12..14
tygodnie
manyThis plural form is used for numbers like: n is not 1 and n mod 10 in 0..1 or n mod 10 in 5..9 or n mod 100 in 12..14
otherThis plural form is used for numbers like: everything else
tygodni
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