how can i set it up so that i can have the program write out the combinations
between two numbers so that there are never the same number twice
and then add a third number to the equation

i need this for league teams
if i have for example 6 teams and i want them to play every other team
before repeating a team
then i want to add games into this combination so not only dont the play the
same team twice they go through all the games before repeating them again