C1^3*E1^4,
C1^3*E1^2*E2^2,
C1*C2^2*E1^2*E2^2,
C1*C2^2*E1*E2^3,
C1*C2^2*E2^4,
C2^3*E1*E2^3,
C2^3*E2^4