If molecular axis is X then which of the following overlapping will form $\mathrm{\pi }$ bond?

${\mathrm{p}}_{\mathrm{z}}+{\mathrm{p}}_{\mathrm{z}},{\mathrm{p}}_{\mathrm{x}}+{\mathrm{p}}_{\mathrm{x}},{\mathrm{p}}_{\mathrm{x}}+{\mathrm{p}}_{\mathrm{y}},\mathrm{s}+{\mathrm{p}}_{\mathrm{z}},{\mathrm{p}}_{\mathrm{y}}+{\mathrm{p}}_{\mathrm{y}}$

$\mathrm{P}-\mathrm{P}$ overlap and $\mathrm{P}-\mathrm{P}$ bond are terms used to describe the mutual overlapping of two atoms' half-filled $\mathrm{P}$ orbitals. If the overlapping occurs along the internuclear axis, the bond is referred to as a "bond," and if it occurs laterally, it is referred to as a "bond." ${\mathrm{P}}_{\mathrm{z}}$ orbitals overlap end to end because they are along the axis, whereas ${\mathrm{P}}_{\mathrm{x}}$ and ${\mathrm{P}}_{\mathrm{y}}$ orbitals overlap sideways because they are not,

${\mathrm{p}}_{\mathrm{z}}+{\mathrm{p}}_{\mathrm{z}},{\mathrm{p}}_{\mathrm{y}}+{\mathrm{p}}_{\mathrm{y}}$