During the lecture we covered several common crystal structures. Please write down the primitive translation vectors and vectors of the basis for $($suppose the lattice constant is a$)$:

a$).$ NaCl

b$).$ CsCl

c$).BaTi{O}_3$

d$).$ Diamond

Write down the primitive vectors and vectors of the basis for the following $2$D crystal. Note that there are three different types of atoms in the structure.