The spelling of the phrase "tell thing two" is quite straightforward. The first word, tell, is spelled /tɛl/, with a short "e" sound and a single "l". The word thing is pronounced /θɪŋ/ with a "th" sound, followed by a short "i" sound and a nasal "ng" sound. Finally, the word two is spelled /tu:/ with a long "u" sound and a silent "w". Together, the phrase is pronounced /tɛl θɪŋ tu:/.