Hey guys, I have to do a 6-0 down counter and a 12-1 down counter, the thing is, I have no idea how to do the 6-0, and for the 12-1, I only know how to do 1-12 up counter. Screenshot below of 1-12, is there anyway I can reverse this? As for the 6-0, how can this be done? I need to use D flip flops and nand4 gates. A drawing or screenshot of this done in a simulation would help a lot.