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computers are useful machines
computers are useful in many ways
computers are machines that
how are computers useful
things computers are used for
modern uses of computer
what do people use computers for
general uses of a computer
a typical modern computer uses
main uses of computer
computers are useful machines, computers are useful in many ways, computers are machines that, how are computers useful, things computers are used for, modern uses of computer, what do people use computers for, general uses of a computer, a typical modern computer uses, main uses of computer
