The number of paramagnetic complexes among \( [\mathrm{FeF}_6]^{3-} \), \( [\mathrm{Fe}(\mathrm{CN})_6]^{3-} \), \( [\mathrm{Mn}(\mathrm{CN})_6]^{3-} \), \( [\mathrm{Co}(\mathrm{C}_2\mathrm{O}_4)_3]^{3-} \), \( [\mathrm{MnCl}_6]^{3-} \) and \( [\mathrm{CoF}_6]^{3-} \), which involved \( d^{2}sp^{3} \) hybridization is ________.
