See Post #7I'm still puzzled. Do you want to count 9-8-7-6-5-4-3-2-1-0-9-8-7-6-........; or should it be 9-7-5-3-1-0-9-7-5-....... ?
9, 7, 5, 3, 1, 9, 7, 5, 3, 1, ...
A normal counter does not count by twos, so you have to transform it into something that counts by ones!