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Continue to ChatI have been working on two problems for three years: one of them for 8 or 9 years, and one of them for 3, 4, 5 years. - Whitfield Diffie from https://whatsmyquote.com/quote/i-have-been-working-on-two-problems-for-three-years-one-of-them-for-8-or-9-years-and-one-of-them-for-3-4-5