N2 — outside your level filter
X and then Y, over and over — two actions locked into a cycle that keeps coming round
原稿を書いては消し、書いては消して、とうとう朝になった。
genkou o kaite wa keshi, kaite wa keshite, toutou asa ni natta.
I wrote and deleted, wrote and deleted, and in the end it was morning. neutral
あの子、おもちゃを買っては飽き、買っては飽きての繰り返しなんだよ。
ano ko, omocha o katte wa aki, katte wa akite no kurikaeshi na n da yo.
That kid buys a toy, gets bored with it, buys another, gets bored — it's the same thing over and over. casual
ては〜ては
ては〜てはte wa te waN2neutral