The word "constitutings" is spelled with the letter "t" after the second "u" because it comes from the base word "constitute" which has a short "u" sound followed by a consonant. The suffix "-ings" is added to create the plural form, indicating multiple instances of the verb "constitute". In IPA phonetic transcription, this word would be spelled /kənˈstɪtjuːtɪŋz/, with the stress on the second syllable and the phonetic symbols indicating the pronunciation of each sound in the word.