         Seritence. 1::1- recéntly purchased :.a..new  computer, and; because it operated-on 4-system  different: from ‘the one of my old -conaputer,.  asked ‘a few: friends’ to recommend 4 word~  protessing package that | might. find useful.    Sentence 2: | already knew how-to use the OS  that my new.mathine ruins.