What is the correct program for Loop animation of A, B and C (A-B-C-A)?

public List stateName; 

    void Start () {StartCoroutine (StartAnim());}

    IEnumerator StartAnim(){

        for(int i=0;i

            GetComponent ().Play (stateName[i]);

            yield return new WaitForSeconds(GetComponent ().GetCurrentAnimatorStateInfo (0).length);

            if(i==stateName.Count-1){i =-1;}

        }

    }

public List stateName; 

    void Start () {StartCoroutine (StartAnim());}

    IEnumerator StartAnim(){

        for(int i=0;i

            GetComponent ().Play (stateName[i]);

            yield return new WaitForSeconds(GetComponent ().GetCurrentAnimatorStateInfo (0).length);

            if(i==stateName.Count-1){i =0;}

public List stateName; 

    void Start () {StartCoroutine (StartAnim());}

    IEnumerator StartAnim(){

        for(int i=0;i

            GetComponent ().Play (stateName[i]);

            yield return new WaitForSeconds(GetComponent ().GetCurrentAnimatorStateInfo (i).length);

            if(i==stateName.Count-1){i =-1;}

void Start(){

        for(int i=0;i

            GetComponent ().Play (stateName[i]);