  As an extension of our previous work on the holon pairing instability in the
t-J Hamiltonian [Phys. Rev. B {\bf 66}, 054427 (2002)], we examine the orbital
symmetries of holon pairing order parameters in high $T_c$ superconductivity by
examining the energy poles of t-matrix. We find that both $s$- and d-wave
symmetries in holon pair order parameter occur at low lying energy states
corresponding to the higher energy poles of t-matrix while only the s-wave
symmetry appears at the lowest energy pole and that this results in the d-wave
symmetry in the Cooper pair order which is a composite of the holon pair of
s-wave symmetry and the spinon pair of d-wave symmetry below $T_c$. Finally we
demonstrate that there exists no time-reversal symmetry breaking in association
with the Cooper pair order parameter.
