The penult was long and bore the accent when it contained (a) a long vowel, (b) a diphthong, (c) a vowel + any two consonants {other than >> [in pencil]} including originally ty-, q, hw, hy.
The only places of doubt are therefore in cases of ty, q {occas[ionally] hw, hy,} since these are sometimes reductions after accent-fixing of tty, kkw. The inflexional pronouns -tye, -qe are short. So kàritye, kàriqe.