The word "plea pure" is spelled phonetically as [pli pjuər]. In this pronunciation, the "e" in "plea" is pronounced as a short "i" sound, while the "u" in "pure" is pronounced as a diphthong, transitioning from the short "yoo" sound to the neutral vowel sound "uh". The stress falls on the first syllable of "plea", giving the word an iambic rhythm. Overall, the spelling of "plea pure" accurately reflects its phonetic pronunciation.