def format_duration(seconds):
    result = ''
    total_result = ''
    m,s = divmod(seconds, 60)
    h, m = divmod(m, 60)
    d, h = divmod(h, 24)
    y, d = divmod(d, 365)
    if y >= 1:
        if y == 1:
            result += str(y) + ' ' + "year,"
        else:
            result += str(y) + ' ' + "years,"
    if d >= 1:
        if d == 1:
            result += str(d) + ' ' + "day,"
        else:
            result += str(d) + ' ' + "days,"
    if h >= 1:
        if h == 1:
            result += str(h) + ' ' + "hour,"
        else:
            result += str(h) + ' ' + "hours,"
    if m >= 1:
        if m == 1:
            result += str(m) + ' ' + "minute,"
        else:
            result += str(m) + ' ' + "minutes,"
    if s >= 1:
        if s == 1:
            result += str(s) + ' ' + "second,"
        else:
            result += str(s) + ' ' + "seconds,"
    if seconds == 0:
        return "now"
    result = result.split(',')
    for elem in result:
        if elem == '':
            result.remove(elem)
    for i in range(len(result)):
        if i == 0 and result[i] != '':
            total_result += str(result[i])
        elif i == len(result) - 1 and len(result) > 1 and result[i] != '':
            total_result += " and " + str(result[i])
        elif result[i] != '':
            total_result += ", " + str(result[i])

    return total_result



def title_case(*args):
    for i in range(len(args)):
        if i == 0:
            title = ([str(elem.lower()) for elem in (str(args[i]).split())])
        else:
            minor_words = ([str(elem.lower()) for elem in (str(args[i]).split())])

    try:
        minor_words
    except UnboundLocalError:
        return (' '.join([str(elem.title()) for elem in title]))

    for i in range (len(title)):
        if title[i] not in minor_words or i == 0:
            title[i] = title[i].title()
    return (' '.join([str(elem) for elem in title]))