chu_ki_te_bao,nguyen_phan_va_giam_phan
chu_ki_te_bao,nguyen_phan_va_giam_phan
chu_ki_te_bao,nguyen_phan_va_giam_phan
chu_ki_te_bao,nguyen_phan_va_giam_phan
chu_ki_te_bao,nguyen_phan_va_giam_phan
chu_ki_te_bao,nguyen_phan_va_giam_phan
chu_ki_te_bao,nguyen_phan_va_giam_phan
chu_ki_te_bao,nguyen_phan_v[r]