$3pq-p{q}^{2}-{p}^{2}q+5pq+2p{q}^{2}+2{p}^{2}q$
$8pq-p{q}^{2}-{p}^{2}q+2p{q}^{2}+2{p}^{2}q$
$8pq+p{q}^{2}-{p}^{2}q+2{p}^{2}q$
$8pq+p{q}^{2}+{p}^{2}q$