I have other channels and I won't use this channel often.
1w7: / @1w7-o5v
t9e: / @t9e192
31q: / @31q89
These channels are not actually new; they were previously owned by me under different names.
1w7 used to be the "100 subscribers with no videos" channel, where the goal of it was to get it to 100 subscribers without it uploading a single video.
t9e used to be "now in one piece", where I was finding channels that went along with song lyrics to be uploaded to that first channel. Since this was a requested one by @thezombiecreeper , I created that channel because there were no existing channels with content that I could find for this particular song lyric.
I'll not spoil what the 31q channel used to be for, though.
These channels have 3-letter names, and all of these names by themselves were not used by any channel that has content from what I have searched so far.