About family

mother                   wife
father                     mother-in-law

sister                      father-in-law
brother                   father-in-law
grandmother         brother-in-law
grandfather           uncle
husband                aunt

cousin                    niece

nephew                  son          daughter

Example:

I have one brother and two sisters.

Everyone has a mother and a father.

I have three cousins

I have four aunts and three uncle...