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If your input is tab-separated:
awk -F"\t" '{ if(NF>M) M=NF; for(N=1; N<=NF; N++) if($N) D[N,++C[N]]=$N } END { for(N=1; N<=M; N++) for(X=1; X<=C[N]; X++) print D[N,X] }' inputfile > outputfile