gcd(29,81) = 1
gcd(95,62) = 1
gcd(18,82) = 2
gcd(19,55) = 1
gcd(14,71) = 1
gcd(35,90) = 5
gcd(54,81) = 27
gcd(81,12) = 3
gcd(90,82) = 2
gcd(86,29) = 1