There are four alleles of Adh which are Adh-1, Adh-2, Adh-3 and Adh-4. Their respective frequencies are 0.11, 0.84, 0.01 and 0.04. What are the Hardy-Weinberg frequencies of the possible 10 genotypes?
My Attempt: First I thought that there were more than 10 genotypes (4*3*2*1) = 24. I've never done HWE with 4 genotypes so im not sure how to use $p+q=1$ or $p^2+2pq+q^2=1$.