your two reds in the old switch (common) go to L in the new one the same way as they are top left common onto left L and bottom left common into right L the same way as before but now side by side.
and your 1 ways are now L1 and 2way L2.
so bottom left one way in to bottom left L1 bottom left 2way into bottom L2 and top 1 way into bottom right L1
in the end if i read it properly you should have a red in each L and a black in bottom L1,L2 and bottom right L1
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