Find most frequent values among 30 last lines

Hello everyone,

I would like to find the right formula to identify the 5 most frequent values (from 1 to 90) among a range comprising the 30 last lines of an Excel sheet, over 5 columns (C to G), and display them in decreasing order in another sheet.

Columns:
A= draw number (the case is based on a 5/90 lottery data)
B= date
C= 1st number drawn
D= 2nd number drawn
E= 3rd number drawn
F= 4th number drawn
G= 5th number drawn

Each line corresponds to 1 daily draw.

In short what I need is a formula which finds the 5 most frequently drawn numbers among the last 30 draws (and ideally sorts them from most to least frequent).

Thanks a lot in advance