Latin translation HELP

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Hi guys, does anyone of you know how to speak Latin (not South American latin). I need to translate this sentence to latin : "thorough consideration before taking action, think while taking action" or the easiest sentence -- "think before act, think while act" I tried so many Latin - English translator, but when I translate back the translation always messy. I found that sentence translated this way : "cogitatio pro factum, reputo dum factum" and "cogitatio prae actio, reputo dum opus" which one is correct ? (Or maybe what is the correct translation)