Which two lines in this excerpt from edgar allan poe's "the raven" show the use of flashback? once upon a midnight dreary, while i pondered weak and weary, over many a quaint and curious volume of forgotten lore,— while i nodded, nearly napping, suddenly there came a tapping, as of some one gently rapping, rapping at my chamber door. "'tis some visitor," i muttered, "tapping at my chamber door— only this, and nothing more." ah, distinctly i remember it was in the bleak december, and each separate dying ember wrought its ghost upon the floor. eagerly i wished the morrow; —vainly i had sought to borrow from my books surcease of sorrow—sorrow for the lost lenore— for the rare and radiant maiden whom the angels name lenore— nameless here for evermore.