Dictionary> SetPiese = new Dictionary>();
char[] litere = \"ABCDEFGHIJLMNOPRSTUVXZ\".ToC
I guess this works:
Dictionary> SetPiese = new Dictionary>();
List SetA = GenerareSetLitere("A", 1, 11);
List SetB = GenerareSetLitere("B", 9, 2);
List SetC = GenerareSetLitere("C", 1, 5);
SetPiese.Add("A", SetA);
SetPiese.Add("B", SetB);
SetPiese.Add("C", SetC);
I'm not sure because you haven't mentioned the key of your dictionary.