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before I found when I found did I found that I found
Never had I found Seldom did I find Hardly had I found No sooner did I find
forget forgot have forgotten had forgotten
has already begun had already begun has begun yet had begun yet
think; have found thought; had lost saw; put thought; had taken
has played play played had played
think; have found thought; had lost saw; put thought; had taken
I found that I found did I find had I found
singer，is singers，are singers，is singer，are
I did find did I find I had found Was I found
I did find did I find I had found was I found
finding found to find to have found
had I found did I find I found found I
moving moved being moved to be moved
think; have found thought; had lost saw ; put thought ; had taken
forgot forget had forgotten have forgotten
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