=CONCATENER(SI(B2=0;"";SI(B2>1;$B$1&REPT(" + "&B$1;B2-1);$B$1))&SI(C2=0;"";SI(C2>1;" + "&$C$1&REPT(" + "&C$1;C2-1);" + "&$C$1))&SI(D2=0;"";SI(D2>1;" + "&$D$1&REPT(" + "&D$1;D2-1);" + "&$D$1))&SI(E2=0;"";SI(E2>1;" + "&$E$1&REPT(" + "&E$1;E2-1);" + "&$E$1))&SI(F2=0;"";SI(F2>1;" + "&$F$1&REPT(" + "&F$1;F2-1);" + "&$F$1)))