Thanks, it's a little clearer in my mind now. But wouldn't this work for you?

    #include <stdio.h>

    #define FOO_(c) printf("%d %d %d\n", c, c, c);
    #define FOO() FOO_(__COUNTER__)
    #define FOO2() FOO_(__COUNTER__)

    int main(void)
    {
            printf("%d %d %d\n", __COUNTER__, __COUNTER__, __COUNTER__);
            FOO();
            FOO();
            FOO2();
            FOO2();
            return 0;
    }

Output:

    0 1 2
    3 3 3
    4 4 4
    5 5 5
    6 6 6