The spelling of the word "Byrge" can be explained using the International Phonetic Alphabet (IPA). The initial sound, "b," is represented by /b/. The following sound, "y," is an unusual sound in English and is formed by rounding your lips and starting to say "oo." This is represented by /ʏ/. The "r" sound is pronounced with a vibrating tongue and is represented by /r/. The "g" sound is a voiced velar stop and is represented by /ɡ/. Therefore, the full IPA transcription of "Byrge" is /bʏrɡ/.