Both sentences are fine as they are, Only then / only when + clause, like negative forms, require S-V inversion. You would is not possible.
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fivejedjon Only then / only when + clause, like negative forms, require S-V inversion.I see. What is and what do you mean by the negative forms? Also what is the S-V inversion here?
fivejedjonYou would is not possible.Is it not possible be