Have you ever looked really closely at the sign on your local 7-Eleven store? If you haven't, I've provided a picture of one in my town for your convenience. (It is, after all, a convenience store.) All of the letters in the word eleven are upper case, except for the last one. For some reason, the final "N" is lower case.
It's 7-ELEVEn.
Now that you've seen it, you'll never be able to UNsee it. You're welcome.