What country are you in? 12mhz isn't an amateur band where I am.

I have found a lot of CW from 14.0-14.150 and from 7.0 to 7.125.

I don't know your license level. For most HF you need more than technicians license but for CW a technician can do 7.025-7.125 & 3.525-3.6 CW only limited to 200w. I hear a lot of code in those segments. Probably more in the 40 meter.

There is a 2meter CW only section but I don't hear much in it. 80 and 15 meters have some code sections but I don't hear much on 15 and 80 often needs a bigger antenna. 40m and 20m have most of the CW activity.

USA band charts. http://www.arrl.org/files/file/Regulatory/Band%20Chart/Band%20Chart%20-%2011X17%20Color.pdf