public static void Main()
for(int first=1;first<16;first++)
for(int second=first+1;second<17;second++)
for(int third=second+1;third<18;third++)
for(int fourth=third+1;fourth<19;fourth++)
for(int fifth=fourth+1;fifth<20;fifth++)
for(int sixth=fifth+1;sixth<21;sixth++)
Console.WriteLine("{0}, {1}, {2}, {3}, {4} , {5}", first, second, third, fourth, fifth , sixth);
Console.WriteLine("Broqt na vsichki kombinacii v toto 6/20 e {0}" ,br);