def get_support_value(supports):
    """ Returns the total support value """
    support_value = 0
    for support in supports:
        if support[0] == 'pin':
            support_value += 1
        elif support[0] == 'fixed':
            support_value += 3
        elif support[0] == 'roller':
            support_value += 7
    return support_value
