We Strike straight. We Sing sin. We Thin gin. We Jazz June. We Die soon.
Repetition can be a tricky business in poems.
He claimed that the second presence of the word reduces the energy at that point as well as at the first appearance of the word. This is good advice, I think. At the same time, however, repetition can accumulate the music and the feeling. There are probably other repetitions here that you can find for yourself. The point, in any case, is the way that Lawrence uses repetition, much like a jazz musician repeating riffs with small alterations in each go-round.