Pythgorean Triples

A Pythagorean triple is a set of three positive integers a, b, and c that satisfy the equation c(sqaure)=a(square)+b(square)

Pythagorean triple that starts with 3

3,4,5

Pythagorean triple that starts with 5

5,12,13

Pythagorean triple that starts with 8

8,15,17

Pythagorean triple that starts with 7

7,24,25

What are the "4" main pythagorean triples?

3,4,5/ 5,12,13/ 8,15,17 / 7,24,25