Thought of this when working on the 6 game the other day. Some other players may have thought of it too.

In Carlina 6 there are four decades.

__ 01 02 03 04 05 06 07 08 09

10 11 12 13 14 15 16 17 18 19

20 21 22 23 24 25 26 27 28 29

30 31 32 33 34 35 36 37 38

Six number are drawn. decades will need to reapeat themselves in the draw.

If you can figure what decade(s) are going to repeat you can focus attention on those decades in your wheel combination.