The word "stuhr" is a difficult one to spell, as it is not commonly used in English. However, its spelling can be explained using the International Phonetic Alphabet (IPA) transcription. The first sound in "stuhr" is an "s" sound, followed by a "t" sound, pronounced together as "st". The final sound is a long "u" sound, represented as /u/, and an "r" sound, represented as /r/. Therefore, the correct spelling of the word is "stuhr", with an "s", a "t", a long "u", and an "r".