com-pu-ter, te-le-phone, au-to-mo-bile, traf-fic, sen-try, cor-net, real-is-tic, fan-a-tic, rep-et-it-ious, gi-gan-tic
I think those are right, because usually you hyphenate words if they don't fit on one line, and you're supposed to do that after the syllables. But I don't know if you're supposed to have multiple hyphens in one word..I did a hyphen at all syllables. Hope this helps you!