this list includes historicall national teams and club teams,but just those who won the major tournements(like the CL and world cup) unbeaten.like the milan team of 89' that won the CL unbeaten,the brazil team of 70' that won the WC unbeaten,etc... please,select 5 different(!) unbeaten winning sides that you think were the strongest ever.select exactlly 5 sides.not more and not less than 5.