Something that stopped quite a while ago was Oliver’s fixation on lining his toys up. It has, in the past two weeks, started reappearing here and there. He has been lining his toys up again every so often and screaming when they aren’t perfectly in line. If he is playing with his toy trains and they are blue train-red train-blue train-red train, he will scream. However, if the colors are matching (blue train-blue train-red train-red train) then all is well. It worries me to see this behavior show itself again.