Discuss the ways in which Iago cleverly sows his poisonous seeds of doubt in othello's mind throughout this scene ?

In this scene, Iago begins his machinations to make it seem like Cassio and Desdemona are having an affair. However, Iago refrains from saying very much; "I cannot think it that he would steal away so guilty-like" is the most incriminating thing he says about Cassio. He makes Othello start to think uneasy thoughts by saying, "I like not that" about Cassio's exit; Othello immediately seizes the bait, his jealousy playing off of Iago's calculated insinuations (III.iii.34-38).