The spelling of the word "most long l" is, in fact, a misspelling. The correct spelling is "most likely." The IPA phonetic transcription for "most likely" is /moʊst ˈlaɪkli/. It consists of two syllables, with the first syllable pronounced with a long "o" sound, and the second syllable pronounced with a long "i" sound. The correct spelling is important for clear communication, so it is always advised to double-check spelling before submitting any written work.