Show the bidirectional FSMs for the Go-back-N protocol using piggybacking.Note that both parties need to send and receive.19. Show the bidirectional FSMs for the Selective-Repeat protocol using piggybacking.Note that both parties need to send and receive.20. Write two algorithms in pseudocode (or in a computer language) for the FSMsrelated to the simple protocol (Figure 13.17).21. Write two algorithms in pseudocode (or in a computer language) for the FSMsrelated to the Stop-and-Wait protocol (Figure 13.20).22. Write two algorithms in pseudocode (or in a computer language) for the FSMsrelated to the Go-back-N protocol (Figure 13.26).23. Write two algorithms in pseudocode (or in a computer language) for the FSMsrelated to the Selective-Repeat protocol (Figure 13.33)