Perhaps, on the front, don’t put the letters, e.g., you have the letter H and a little round ball that signifies H. Just have the balls on front, and the equation will be in the back. And keep the plus sign on the H + B11, because we don’t want two arrows leading from them to the intermediate stage, we only want the one arrow going straight down, hitting the intermediate stage, and 3 arrows flying off from that.
