What are some examples of friendship in the book Night by Elie Wiesel?

There are a few examples. Here are some that I can think of:

Juliek: He brings beautiful music to a dark Death Camp.

Czech brothers: They make friends with Elie. They are also devoted to each other, "body and soul."

Alphonse, the German-Jewish Blockalteste: The prisoners in his block have Alphonse as their leader, which is a good thing. Alphonse defends the block and finds food for the young and weak.

French woman: Even though it could have meant her life, the French woman tends to Elie's wounds and encourages him to move on.