  The objectives of this project are to predict new meteor showers associated
with as many as possible known periodic comets and to find a generic
relationship of some already known showers with these comets. For a potential
parent comet, we model a theoretical stream at the moment of its perihelion
passage in a far past, and follow its dynamical evolution until the present.
Subsequently, we analyze the orbital characteristics of the parts of the stream
that approach the Earth's orbit. Modelled orbits of the stream particles are
compared with the orbits of actual photographic, video, and radar meteors from
several catalogues. The whole procedure is repeated for several past perihelion
passages of the parent comet. To keep our description compact but detailed, we
usually present only either a single or a few parent comets with their
associated showers in one paper. Here, an overview of the results from the
modelling of the meteor-shower complexes of more than ten parent bodies will be
presented. This enables their diversities to be shown. Some parent bodies may
associate meteor showers which exhibit a symmetry of their radiant areas with
respect to the ecliptic (ecliptical, toroidal, or showers of an
ecliptic-toroidal structure), and there are showers which have no counterpart
with a similar ecliptical longitude on the opposite hemisphere. However,
symmetry of the radiant areas of the pair filaments with respect to the Earth's
apex is visible in almost all the complexes which we examined.
