The word "BETACM" is a combination of letters that could be confusing to spell. However, the IPA phonetic transcription can help clarify its pronunciation. The first syllable "be" is pronounced as /bi/, followed by the letter "t" which is pronounced as /t/. The next syllable "ac" is pronounced as /æk/, and the final syllable "m" is pronounced as /m/. Putting those sounds together, the correct spelling for BETACM would be /bi-tæk-m/. It is important to master phonetic transcription to properly spell and pronounce complex words like BETACM.