  A simple, general rule for generating a three-band model with arbitrary Chern
numbers is given. The rule is based on the idea of monopole charge-changing
unitary operations and can be realized by two types of simple unitary
operations on the original Hamiltonian. A pair of monopole charges are required
to produce desired topological numbers in the three-band model. The set of
rules presented here offers a way to produce lattice models of any desired
Chern numbers for three-sublattice situations.
