[['round', 'circuit', 'date', 'class a winner', 'class b winner', 'class c winner', 'class d winner'], ['1', 'snetterton motor racing circuit , norfolk', '14 april', 'john love', 'alan hutcheson', 'none (no entries)', 'mike parkes'], ['2', 'goodwood circuit , west sussex', '23 april', 'christabel carlisle', 'alan hutcheson', 'none (no entries)', 'graham hill'], ['3', 'aintree motor racing circuit , liverpool', '28 april', 'john love', 'alan hutcheson', 'nicky byrne', 'graham hill'], ['4', 'silverstone circuit , northamptonshire', '12 may', 'john love', 'peter harper', 'innes ireland', 'graham hill'], ['5', 'crystal palace , london', '11 june', 'john love', 'peter harper', 'none (no entries)', 'roy salvadori'], ['nc', 'goodwood circuit , west sussex', '11 june', 'unknown', 'unknown', 'nicky byrne', 'pj woodroffe'], ['nc', 'snetterton motor racing circuit , norfolk', '15 july', 'mick clare', 'alan hutcheson', 'unknown', 'graham hill'], ['6', 'aintree motor racing circuit , liverpool', '21 july', 'john love', 'peter harper', 'nicky byrne', 'jack sears'], ['7', 'brands hatch , kent', '6 august', 'john love', 'peter jopp', 'david haynes', 'mike parkes'], ['8', 'oulton park , cheshire', '1 september', 'john love', 'peter harper', 'chris mclaren', 'graham hill']]
there were 2 different month that had 2 Circuit apiece
there were 2 different month that had 2 [ENT] apiece