All possible number combinations

function knumbers(n)
    local TO_RETURN, a, vals = {}, {}, {};
    for i=1, n do
        vals[i] = tostring(i);
    end;
    local function aux(m)
        for i=1, n do
            a[m] = vals[i];
            if (m < n) then
                aux(m + 1);
            else
                --print(table.concat(a));
                table.insert(TO_RETURN, table.concat(a));
            end;
        end;
    end;
    aux(1);
    return TO_RETURN;
end;



------------------------------------------------------

local r = knumbers(3)

print("Number of numbers combinatons:   "..#r..";")

for i,v in next, r do
        --print("   "..i..". "..v)
        print(string.format(
                "   [%0"..#tostring(#r).."i]:   %s",
                i, v
        ))
        if not pcall(function() game:service'RunService'.RenderStepped:wait() end) then wait() end
end