MissingIndecomposables(d)
The function MissingIndecomposables  prints  the list of  partitions
corresponding  to the indecomposable modules which  are  not listed in
d.
See      also   DecompositionMatrix    DecompositionMatrix     and
CrystalDecompositionMatrix     CrystalDecompositionMatrix.    This
function requires the package ``specht'' (see RequirePackage).
GAP 3.4.4