Yes it should be جارُك When the sentence begins with a noun, it always ended by ( ُ ) and then the possessive prefix if there's one. But in the dialect language we don't pronounce it. For exemple, here in Morocco, we pronounce it ( جارْك jarek )
Im confused too with the accents
It should be جارُكَ
Jaraka or jareka?! Whats the difference