Finding the most common combination with three fields

[AWF13]

I have a spreadsheet that includes all orders from 2018 with columns of thickness, width, and length. I need to determine the most common combination of thickness, width, and length ie (0.5, 60, 480) is the most common item in the list.

Spreadsheet attached.

Thanks in advance

[Roel Jongman]

I would add an extra column and make a pivot with a desencing sort by qty found

see the attachment.

[Richard Buttrey]

See attached.

Concatenate the three fields, remove the duplicates and then count the number of occurences.
.1875 84 602 with five occurences is the most common

[AWF13]

These worked. Thank you!!!