What is the total number of different types of unit cells in a tetragonal crystal system?

The unit cell with crystallographic dimensions,$a \neq b \neq c$,$\alpha = \gamma = 90^{\circ}$ and $\beta \neq 90^{\circ}$ is

How many types of unit cells are found in a primitive cubic unit cell?

The relation between axis and angles $a \neq b \neq c$ and $\alpha = \gamma = 90^{\circ}, \beta \neq 90^{\circ}$ corresponds to which crystal system?

The total number of body-centred lattices possible among the $14$ Bravais lattices is:

Which of the following crystal systems has $a = b = c$ and $\alpha = \beta = \gamma \neq 90^o$?