The spelling of the word "collman" is quite straightforward when using IPA phonetic transcription. The first syllable "coll" is pronounced as /kɒl/, with a short "o" sound and a hard "k" sound. The second syllable "man" is pronounced as /mæn/, with a short "a" sound and a soft "m" sound. Therefore, the IPA phonetic transcription of "collman" would be /kɒlmæn/. It is important to use IPA when discussing spelling and pronunciation since it provides a standardized system that can be easily understood by speakers of various languages.