  We study the size properties of the largest intermediate mass fragments in
each partition mode, produced in the prompt statistical breakup of a thermally
equilibrated nuclear source, at different temperatures. We find that an
appreciable amount of events have primary intermediate mass fragments of
similar sizes. Our results suggest that, depending on the temperature of the
fragmenting source, their production may be much larger than what would be
expected from considerations based on purely combinatorial arrangements of the
nucleons in the fragmenting system. We also find that the isospin composition
of the largest fragments is sensitive to their rank size within the event. We
suggest that experimental analyses, conceived to reconstruct the breakup
configuration, should be employed to investigate the validity of our findings.
