What about the opposite of this, This has been very helpful for me, but at
the same time, I needed the opposite of this to..

ie, this to

        spl_A   spl_B   spl_C 
spcs1   1       1       0 
spcs2   1       0       1 
spcs3   0       1       1

this

spl_A     spl_B spl_C 
spcs1  spcs1    spcs2 
spcs2    spcs3  spcs3 
spcs4    spcs5 
spcs5


Thank you

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