It's so strange to read that other people do this as well. I'm 19 and have been doing it for as long as I can remember. I never really mention it to anyone because it's odd to try to explain. I don't alphabetise letters but i do count them. Although I didn't notice anyone else doing the same as me. If for example i was to count "cows eat grass" i would also have to count the empty spaces within the letters. So although there are 12 letters, I would end up with 17. I also count punctuation. And it does start to drain me when I'm reading. Does anyone else do this? Once again, it's so interesting to hear everyone elses stories.