$$(P+2q+3p)^{3}$$
$\left(3p+2q+P\right)^{3}$
$27p^{3}+27Pp^{2}+36pq^{2}+36Ppq+9pP^{2}+8q^{3}+12Pq^{2}+54qp^{2}+6qP^{2}+P^{3}$