You have each each which is each (or every, or "respectively"). Kind of goes along the lines of "each and every" in English.
The reading is weird. So sorry. Just imagine you look at each item. Every single one is messed up in some way. Possibly they are robots all accidentally programmed to need to kill humans. You say "oh no oh no" in quick succession because this is a bad situation.
Koichi and Viet ordered a burger and a hot dog, respectively.
Well, each of us has our reasons for doing things, right?
It seems that each person has their own way of eating potato chips.