Ridiculous amount of key combinations I have never used

So I was just looking through my stats, which I do very rarely, and noticed the key combinations page. My first 5 combinations are all the windows key + some other key. At number one is win + D with 12,839 times used. Number two win + G at 12,788. The trend continues on with a nearly every key on my keyboard, some with thousands of inputs and some with a dozen. However I almost never press the windows key, and have without a doubt never inputted these combinations, let alone almost 13 thousand times. Key combos I use all the time like ctrl + v and ctrl + c are only at 2500. So what happened?