for a in linhas:
              for c in range(1,len(a)):
                  if a[0][56:62] not in codigo:
                      codigo.append(a[0][56:62])
                  if a[c][8:49] not in clientes and c<=2:
                      clientes.append(a[c][8:49])
                  elif a[c][8:49] not in clientes and c>=3:
                        x=len(clientes)
                        clientes[x-1]=clientes[x-1]+","+a[c][8:49]