The spelling of the word "Basom" can be explained using the International Phonetic Alphabet (IPA) transcription. The first sound is /b/, followed by a short vowel sound /æ/. Next comes the consonant cluster /s/ and /ɑ/, which is followed by the consonant /m/. Altogether, the phonemes in "Basom" are pronounced as /ˈbæsɑm/. It's important to note that the spelling of words can sometimes be inconsistent with their pronunciation, which is why understanding phonetic transcription can be helpful.