  Much work has been done by a number of authors with the aim of constructing
the supersymmetric Standard Model in type IIA intersecting-brane theories
compactified on an orientifold with various Z_N or Z_M x Z_N point groups. Here
we consider the Z_{12} point group which has previously received comparatively
little attention. We consider intersecting D6-branes that wrap 3-cycles
consisting of a 2-cycle of the 4-dimensional lattice upon which the Z_{12} is
realised times a 1-cycle of the remaining 2-torus. Our discussion is restricted
to the case when these 2-cycles are "factorisable" in the sense discussed in
section 3. Although it is possible to find models with the correct
supersymmetric Standard Model quark-doublet content, we have not found it
possible to obtain the correct quark-singlet content.
