def freq(l):
    result = {}
    # Prepare the dictionnary of frequencies
    for a in l:
        result[a] = result[a]+ 1 if a in result else 1
    # Get the max value -frequency- in the dict.
    m = max(result.values())
    # Find all the elements that have the max frequency m
    keys = [k for k, v in result.items() if v == m]
    tup = []
    for i in keys:
        tup.append((i, result[i]))
    return tup

# Example:
print(freq([1, 1, 3, 3, 3, 4, 5, 4, 5, 5]))