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By means of solving the Bethe-Salpeter equation with the minimal perturbativekernel (ladder approximation) in the arbitrary covariant gauge, there was founda series of intercepts of meson Regge trajectories associated with colorlesssingularities of the four-quark Green function in SU($N_c$) quantumchromodynamics with massless quarks. The gauge and renorm-invariance of theresult is grounded.

Intercepts of meson Regge trajectories in SU($N_c$) quantum chromodynamics with massless quarks