The spelling of the word "bober" can be explained using IPA phonetic transcription. The first sound is a bilabial stop /b/, followed by a mid back rounded vowel /o/, and then another bilabial stop /b/. The final sound is an alveolar trill /r/. This is a common pattern in the Polish language, where the word "bober" means "beaver". It is important to note that the pronunciation may vary depending on the region and dialect.