The word "spens" is not commonly used in English, but if one were to come across it, the correct spelling would be with just one "s" instead of two. The phonetic transcription for "spens" would be /spɛnz/, with the "s" sound being represented by the IPA symbol /s/. The word is not to be confused with the similar sounding word "spins," which has a different meaning and spelling. It is important to pay close attention to spelling when communicating in written English.