Deleting/Clearing duplicate range of cells
 

Below is my data.
If a row range of cells is identical to another, could a macro be written
to find the duplicated rows, and clear those cells ?
As follows:
M3:R3 no duplicate, so keep M3:R3
M4:R4 identical to M5:R5, so delete/clear M5:R5
M6:R6 identical to M7:R7, so delete/clear M7:R7
M8:R8 identical to M9:R9, so delete/clear M9:R9
M10:R10 identical to M11:R11 & M12:R12, so delete/clear M11:R12
There will be no consistency as to what rows would be duplicated and
therefore needing to be cleared, meaning tomorrow it might be row 4 that is a
duplicate to 3, so 4 would need to be cleared; 5, 6, 7 & 8 might be
identical, so 5, 6 & 7 would need to be cleared, etc.

Row M N O P Q R
3 90 100 580 3 9000 2010042
4 90 1000 191 6 9100 2010041
5 90 1000 191 6 9100 2010041
6 90 1000 191 6 9100 2010042
7 90 1000 191 6 9100 2010042
8 90 1000 191 6 9100 2010062
9 90 1000 191 6 9100 2010062
10 90 1000 191 9 9100 2010071
11 90 1000 191 9 9100 2010071
12 90 1000 191 9 9100 2010071

Thank you,

Steve