The spelling of the word "clarno" can be explained using IPA phonetic transcription. The word is pronounced as /klɑrnoʊ/ which consists of five phonemes: /k/, /l/, /ɑ/, /r/, and /noʊ/. The first two consonants, /k/ and /l/, represent the initial sounds of the word. The vowel /ɑ/ in the third position is followed by the consonant /r/ which produces a phonetic sequence /ar/. The final two phonemes, /noʊ/, represent the nasalized vowel /o/ followed by the diphthong /ʊ/.