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Had I known about this computer program, a huge amount of time and energy ____.

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Should I know  If I knew  Had I known  If had I known  
did I know    I had known    I knew    was I known  
I had known    had I known    did I know    I knew  
would have been saved    had been saved    must be saved    was saved  
If I would have known it  If I had have known it  Had I known it  Should I known it  
Had I known    I had known    Were I to know    Did I know  
would have been saved    had been saved    will be saved    was saved  
If I would have known    If I had have known    Had I known    Should I know  
would help you  will help you  will have helped you  would have helped you  
I had known   I have known   do I know   did I know  
know, would have helped    know, have helped    knew, could have helped    had known, could have helped  
would have been saved    had been saved    will be saved   was saved  
knew; were    had known; were    knew; had been    had known; had been  
If I would have known it    If I had have known it   Had I know it    Should I know it  
If I would have known it    If I had have known it   Had I known it    should I know it  
I knew  did I know  I had known  had I known  
had known, would not be    had known; wouldn’t have been    knew; would not have been    had known; would never be  
would have been saved    had been saved    will be saved    was saved  
would have been saved   had been saved   will be saved   was saved  
would have been saved  had been saved  will be saved  was saved  

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