=ET(B2<>"";SI(B$1="";A2;C2)<>"";B2=SI(B$1="";A2;C2))
=ET(B2<>"";SI(B$1="";A2;C2)<>"";B2>SI(B$1="";A2;C2))
=ET(B2<>"";SI(B$1="";A2;C2)<>"";B2<SI(B$1="";A2;C2))
=ET(B2<>"";SI(B$1="";A2;C2)<>"";B2=SI(B$1="";A2;C2))
=ET(B2<>"";C2<>"";B2=C2)
=ET(C2<>"";SI(C$1="";B2;D2)<>"";C2=SI(C$1="";B2;D2))
=ET(C2<>"";B2<>"";C2=B2)