What is the cefr level of sentence: "One always feared the shove from behind that would send one teetering over the edge and into the filthy well, sprawling amid the unutterable disjecta of countless subway riders, the oily soot, the rat faeces, one's head coming to rest in the Stygian trickle that ran ceaselessly between the tracks, one's leg fetching up against the live rail, the death rail."?
c1