Its position is determined by the syllable weight of the penult. Most multisyllabic words are stressed on the penult. To determine stress, syllable weight of the penult must be determined. The mid vowels are restricted to the penult of lexical morphemes, which is stressed. Word stress generally falls either on the last or the penult syllable of a word. The penult follows the antepenult and precedes the ultima. When a word has primary stress on the penult, the orthography does not mark it. Penult and antepenult are abbreviations for "paenultima" and "antepaenultima". In Quechua, Esperanto, and Polish, the stress is almost always on the penult (second-last syllable). Stress moved to the penult if it was heavy or to the antepenult otherwise. However, a stressed vowel in the penult before "ll" is always short&colon; (clothes). In certain languages, such as Welsh and Polish, stress is always on the penult. Occasionally, "penult" refers to the last word but one of a sentence. Penult has the prefix "paene" "almost", and antepenult has the prefix "ante" "before".