thx mahmoud
but i have something to add

cya = see you ÃÔæÝß ÈÚÏíä

nvm = never mind æáÇ íåãß

pls = please ãä ÝÖáß

thx = thanks ÔßÑÇ

tyvm = thank you very much ÔßÑÇ ÌÏÇ

np = no problem ãÔ ãÔßáÉ

and thx again