ei pakke · package, parcel
Feminine (ei)
Indefinite singular
ei pakke
Definite singular
pakka
Indefinite plural
pakker
Definite plural
pakkene
Feminine nouns (ei) can always be written with en as well: ei bok, boka or en bok, boken. Both are correct Bokmål.
How to guess the gender Nouns: gender and articles