Repeating if equation

Hi,

I want to repeat the following equation 24 times with the changing values along the column down. After that I want to repeat the same equation again but again starting from "4" value only for A4, B4,C4,D4,G4,E4,J4,H4,L4,K4,I4 . That means equation starts

=IF(O4>11,A4,IF(O4>10,B4,IF(O4>9,C4,IF(O4>8,D4,IF(O4>7,G4,IF(O4>6,E4,IF(O4>5,J4,IF(O4>4,H4,IF(O4>3,L4,IF(O4>2,K4,IF(O4>1,I4,F4)))))))))))

equation after the 24 times

=IF(O27>11,A27,IF(O27>10,B27,IF(O27>9,C27,IF(O27>8,D27,IF(O27>7,G27,IF(O27>6,E27,IF(O27>5,J27,IF(O27>4,H27,IF(O27>3,L27,IF(O27>2,K27,IF(O27>1,I27,F27)))))))))))

Then again equation should start

=IF(O28>11,A4,IF(O28>10,B4,IF(O28>9,C4,IF(O28>8,D4,IF(O28>7,G4,IF(O28>6,E4,IF(O28>5,J4,IF(O28>4,H4,IF(O28>3,L4,IF(O28>2,K4,IF(O28>1,I4,F4)))))))))))

equation will end

=IF(O51>11,A27,IF(O51>10,B27,IF(O51>9,C27,IF(O51>8,D27,IF(O51>7,G27,IF(O51>6,E27,IF(O51>5,J27,IF(O51>4,H27,IF(O51>3,L27,IF(O51>2,K27,IF(O51>1,I27,F27)))))))))))


again it should start similar way.
If possible please help me.I hv attached the sheet and done the same manually starting from cell 'P28'.
Great many thanks.