How many times was arkle the racehorse beaten?

Arkle was a some what freak of nature. He won 27 of 35 starts with distances from 5 furlongs to 6 furlongs. He won three consecutive Cheltenham Gold Cups in 1964, 1965, and 1966. There is a lot of other information I could list, but it is very lengthy. He was certainly one of a kind.