cowhat, how much
cowhy
cosince (the day)
cohuh?
tebe, těyou
ti, ty, tathe, those
tyyou, thou, thee
trápittrouble, worry , grieve, afflict
trápit seworry/bother/fret , be* hurting, agonize
trápit: Co tě trápí?What is worrying/troubling/bothering you?
bother: What is bothering you?Co tě trápí?, Co tě štve?