The spelling of the word "drave bus" may seem quite odd at first glance. However, the pronunciation of the word would follow the IPA phonetic transcription of /dɹeɪv bʌs/. The "d" and "r" are pronounced together as a consonant cluster, followed by a long "a" sound. The "v" and "e" create another consonant cluster, and the word ends with the short "u" sound of "bus." Although uncommon in modern English, this type of spelling was more prevalent in the past.