What were the main jibbs episodes? Which episodes did Du learn the most about "them"?

kill ari pt 2
silver war
probie
frame up

My Favorit is brothers in arms. Tons of jibbs!! We don't really have one episode where we learn about them but in kill Ari and judgment Tag 1 we get some. <3 in kill Ari 1 & 2 we find out they did IT Von flasnacks and in the car he sagte "that was the Sekunde time we..." Jen cut him off. Then in 5.1 we know they were stuck in a farm together and " there was nothing better to do then have" according to jenny. Also in "model behavior" they talk about Schreiben and Lesen a dear John. This lets us know Jen wrote him a letter ending it. These are just the eps. I thought Du might wanna see. :-)