def pivot_index_mo3(values, left, right):
    """
    Returns the index of the item that is the median of the left, right and
    middle value in the list. The return value should normally be
    either left, right or middle.
    If there are only two items in the range, ie, if right==left+1
    then return the index of the first item as there are only two items
    to find the median of, so we can't get a middle index...
    If there is only one item in the range then also simply
    return the left index, ie, if left==right then return left.

    >>> print(pivot_index_mo3([0,1,2],0,2))
    1
    >>> pivot_index_mo3([2,1,0],0,2)
    1
    >>> pivot_index_mo3([1,2,3],0,2)
    1
    >>> pivot_index_mo3([3,2,1],0,2)
    1
    >>> pivot_index_mo3([3,5,1],0,2)
    0
    >>> pivot_index_mo3([1,5,3],0,2)
    2
    >>> pivot_index_mo3([1,2],0,1)
    0
    >>> pivot_index_mo3([3,1],0,1)
    0
    >>> pivot_index_mo3([1,2],1,1)
    1
    >>> x = [1,1,3]
    >>> i = pivot_index_mo3(x,0,2)
    >>> x[i]
    1
    >>> y = [1,3,1]
    >>> i = pivot_index_mo3(y,0,2)
    >>> y[i]
    1
    >>> z = [3,1,1]
    >>> i = pivot_index_mo3(z,0,2)
    >>> z[i]
    1
    >>> xx = [1,3]
    >>> i = pivot_index_mo3(xx,0,1)
    >>> xx[i]
    1
    >>> pivot_index_mo3([1,2,2,5,2,8,10],0,6)
    3
    >>> pivot_index_mo3([1,6,0,5,9,8,10],0,4)
    0
    """

    middle = (left + right) // 2
    # ---start student section---
    if values[left] < values[middle]:
        if values[middle] < values[right]:
            return middle
        elif values[left] < values[right]:
            return right
        else:
            return left
    elif values[left] < values[right]:
        return left
    elif values[middle] < values[right]:
        return right
    else:
        return middle
    # ===end student section===