<prompt> Theha polelo e tloaelehileng ho khetholla likhoele tse qalang ka tlhaku s.nan  <response>: Instruction in English: Construct a regular expression to identify strings that start with the letter s. . Response in English: The regular expression to identify strings that start with the letter s is s or sS if you want to make it case-insensitive. . Response in Sesotho: Polelo e tloaelehileng ea ho khetholla likhoele tse qalang ka tlhaku s ke s kapa sS ha u batla ho etsa hore e se utloe letho. 