where we have used η$_{d}$ = λ and ξ$_{d}$ = λ $^{2}$. As one can see, the fourth generation quark mixing angles are directly related to the mass ration m$_{b}$/m$_{b}$ ′ via ρ$_{d}$ . We note that the contribution of ρ$_{u}$ to the mixing angles is negligibly small compared with that of ρ$_{d}$ . To illustrate our implications, we substitute the lower bound of m$_{b}$ ′ , i.e., m$_{b}$ ′ > 199 GeV [18], and the central value m$_{b}$ = 4 . 2 GeV [18], into Eq. (30). Then we get ρ$_{d}$ < λ 2 and It is interesting to see that | V$_{tb}$ ′ | and | V$_{t}$ ′ $_{b}$| can be large, which could be measurable at the upcoming experiments like the LHC. Finally, we briefly comment about CP violation. Although, in general, the discussion of CP violation in the fourth generation model is very complicated, in the chiral limit of m$_{u,d,s,c}$ = 0, CP violation is described by only one simple quantity [19] As discussed in Ref. [12], the quantity may provide us useful information about the size of CP violation. By introducing the same phase factors discussed in Sec. III, we find that J 4 ≃ 10 − $^{7}$. Unfortunately, the result is much smaller than the SM Jarlskog invariant parameter J$_{SM}$ ≃ 10 − $^{5}$. Hence, the fourth generation model, in our scheme, cannot be the main source of the CP violating phenomena, such as the baryon asymmetry of the Universe [20]. We have studied the quark masses and mixing angles with the hierarchical FL symme- try. We have shown that the symmetry can explain the hierarchies in the quark masses and mixing angles at the same time. As a result, the masses and mixing angles are closely related with each other in our model. To generate light quark masses and CP violation, we have introduced phase factors into the mass matrices, and then demonstrated that our model can reproduce all experimental values. We have also extended our scheme to V. SUMMARY 9 J 4 = Im[ V$_{tb}$V ∗ t ′ $_{b}$V$_{t}$ $^{′}$b′ V ∗ tb ′ ] . (35) | V$_{ub}$ ′ | ≃ | V$_{t}$ ′ $_{d}$| < λ 5 , (32) | V$_{cb}$ ′ | ≃ | V$_{t}$ ′ $_{s}$| < λ 4 , (33) | V$_{tb}$ ′ | ≃ | V$_{t}$ ′ $_{b}$| < λ 2 . (34)