  The "triple-Regge" analysis of subleading Reggeon contributions to the
diffractive structure function in DIS at HERA is presented. The recently
published data allow to estimate the only free parameter of the analysis
related to the ratio of the RRP and PPP couplings. The large value of this
ratio is prefered which is in agreement with analyses of soft hadronic
interactions. The role of the subleading Reggeons as well as pions for the fast
forward neutron production in diffractive processes is estimated. The forward
piN state production is also discussed.

High Energy Physics - Phenomenology