Get 20 most frequent pairs(2/2) and triplets(3/3) of numbers mysql

[jhon travolta]

I'm trying to get the 20 most frequent pairs(2/2) and triplets(3/3) of numbers, my table looks like this:
+----+------+------+------+------+------+------+------+------+------+------+
| id | nr_1 | nr_2 | nr_3 | nr_4 | nr_5 | nr_6 | nr_7 | nr_8 | nr_9 | nr_10|
+----+------+------+------+------+------+------+------+------+------+------+
| 1 | 1 | 3 | 19 | 23 | 28 | 32 | 39 | 42 | 60 | 80 |
+----+------+------+------+------+------+------+------+------+------+------+
| 2 | 1 | 3 | 18 | 24 | 29 | 33 | 40 | 43 | 61 | 80 |
+----+------+------+------+------+------+------+------+------+------+------+
| 3 | 1 | 2 | 3 | 25 | 30 | 34 | 41 | 44 | 62 | 78 |
+----+------+------+------+------+------+------+------+------+------+------+

Imagine that there is a lottery with 10 drawn numbers out of 80 and in the table are the results.

I want a way to find the most drawn pairs and triplets from any numbers of draws.

Per example:

Pairs of numbers(two numbers that have been drawn toghether):

-the numbers 1 and 3 have been drawn together 3 times, which makes it the most drawn pair of numbers out of the 3 draws.

-the numbers 1 and 80 have been drawn together 2 times along with 3,80 which also has been drawn 2 times out of 3 draws.

As for most drawn triplets( any combination of 3 numbers):

-1,3,80 is the most common triplet, being drawn together 2 times out of the 3 draws.