  We give an explicit combinatorial formula for the Schur expansion of
Macdonald polynomials indexed by partitions with second part at most two. This
gives a uniform formula for both hook and two column partitions. The proof
comes as a corollary to the result that generalized dual equivalence classes of
permutations are unions of standard dual equivalence classes of permutations
for certain cases, establishing an earlier conjecture of the author.
