copy/paste based on duplicate cell value in column

[Sabosis]

Hello-
I need a code to copy/paste based on duplicate cell values in a column. Please see example below. I want to take values from A2:B2 and paste to C1:D1 if there is duplication in E1:E2. Then loop through the rest of the spreadsheet. Any ideas? Thanks
Sample
A B C D E
111 222 ABC
333 444 ABC
555 666 DEF
777 888 DEF
Result
A B C D E
111 222 333 444 ABC
333 444 ABC
555 666 777 888 DEF
777 888 DEF

 

[Sabosis]

Sorry, my first post... Please note that in the sample, columns A & B would hold the numeric sets and column E would hold the alpha values. C & D are meant to be blank. In the results, the first row would show how columns A:E would look. I was not aware that info could be put into tables for posting and cannot edit the original post at this time. Sorry my example is messed up.