aba,a diferit de0 si b
101,202,303,404,505.606.707.808.909.121,131,141,151,161,171,181,191
a=1,b=0,2,3,4,5,6,7,8,9
a=2,b=0,1,3,4,5,6,7,8,9,
a=3,b=0,1,2,4,5,6,7,8,9,
a=4,b=0,1,2,3,5,6,7,8,9,
a=5,b=0,1,2,3,4,6,7,8,9,
a=6,b=0,1,2,3,4,5,7,8,9,
a=7,b=0,1,2,3,4,5,6,8,9
a=8,b=0,1,2,3,4,5,6,7,9
a=9,b=0,1,2,3,4,5,6,7,8
810nr.
