Stress is almost always placed on the stem. When the stem has two syllables, the stress may be either on the first or the second syllable but there is a rule: if the final syllable of the stem contains a long vowel or diphthong, or if it ends with more than one consonant, that syllable receives the stress (e.g. importance). Otherwise, the syllable before the last one receives the stress (e.g. military).