The spelling of the word "Berrta" may seem unconventional, but it follows the rules of English phonetics. In International Phonetic Alphabet (IPA) phonetic transcription, "Berrta" is spelled as /bɛrtə/, with the stressed syllable "bert" pronounced with an "e" sound as in "bed" and the unstressed syllable "ta" with a schwa sound. The double "r" indicates a short pause before pronouncing the second "r". While it may not be a common spelling, the pronunciation of "Berrta" is clear and accurate.