Day D : Sorry if I didn't have time write anything this day but I catch back by writing today, but the photo was taken the good day. So hmm yes, day D because I had an exam, and it failed, I accuse all the yellow ducks in my head who haven't been of a great help, saying coin coin instead of giving me some useful equations and relations. Sometimes I don't like them, they are a bit messy (the ducks)