When I am writing (pen and paper) I sometimes write the second letter of a word first. I write it like the first letter, so capitalized if that applies. I notice this problem the second I put it on paper, but that somehow doesn't change the fact that it is still happening. I tried to monitor this behaviour to see how and when it is happening, and found out these few things:
it always happens when I start to write something after I stopped. So when I writing something continuously it doesn't happen, but when I stop my writing to take a sip of tea for example, it does happen with the first word I write.
it is always the second letter. Never the third letter, or another, always the first.
a few other people I told about this problem said they also experienced it the same way.
it doesn't happen when I am copying something directly out of a book etc. Only when I have the word or sentence in my head and want to write it down. But, when I read a sentence in a book, memorize it and then write it down without looking at the book again, it does happen sometimes.
there doesnt seem to be a pattern as to when it happens. Everytime it happened I wrote some keywords, and there is no logical pattern. A few of them were tired/not tired, boring/fun, school/free time, dutch/english (dutch is my first language). They all seem to appear in every possible combination completely random.