[['year', 'class', 'team', 'points', 'wins'], ['1952', '250cc', 'nsu', '2', '0'], ['1954', '125cc', 'mv agusta', '6', '0'], ['1954', '250cc', 'moto guzzi', '5', '0'], ['1955', '350cc', 'moto guzzi', '7', '0'], ['1956', '125cc', 'mv agusta', '0', '0'], ['1956', '250cc', 'mv agusta', '9', '0'], ['1956', '350cc', 'mv agusta', '4', '0'], ['1957', '125cc', 'mv agusta', '11', '0'], ['1957', '250cc', 'mv agusta', '10', '0']]
Roberto Colombo was on 2 different team in 1954
[ENT] was on 2 different team in [ENT]