  The aim of the present paper is to derive explicit formulas for arbitrary
peakon solutions of the Geng-Xue equation, a two-component generalization of
Novikov's cubically nonlinear Camassa-Holm type equation. By performing
limiting procedures on the previosly known formulas for so-called interlacing
peakon solutions, where the peakons in the two component occur alternatingly,
we turn some of the peakons into zero-amplitude "ghostpeakons", in such a way
that the remaining ordinary peakons occur in any desired configuration. We also
study the large-time asymptotics of these solutions.
