The correct spelling of the word "be fence" is actually "pa-fence" which is pronounced as /pəˈfɛns/ according to the IPA phonetic transcription. The confusion in the spelling may arise because of the way it is pronounced in some regional accents. In Standard English pronunciation, the "be" sound is replaced with a schwa sound and an emphasis is put on the second syllable. It is important to use the correct spelling of words to improve effective communication and avoid misunderstandings.