short—in each stanza are fifteen syllables long, the rhymed line sixteen. The longer lines give the effect of shorter ones, however, and add still further to the frequency of repeated sounds, for the first half of each opening line rhymes with the second half of the line, and so do the halves of line 3. There is still more: the first half of line 4 rhymes with the halves of line 3 (in the first stanza the rhymes are "dreary" / "weary" and "napping" / "tapping" / "rapping"). So at least nine words in each six-line stanza are involved in the regular rhyme scheme, and many stanzas have added instances of rhyme or repetition. As if this were not enough, all the half-line rhymes are rich feminine rhymes, where both the accented and the following unaccented syllables rhyme— "dreary" / "wary."
short—in each stanza are fifteen syllables long, the rhymed line sixteen. The longer lines give the effect of shorter ones, however, and add still further to the frequency of repeated sounds, for the first half of each opening line rhymes with the second half of the line, and so do the halves of line 3. There is still more: the first half of line 4 rhymes with the halves of line 3 (in the first stanza the rhymes are "dreary" / "weary" and "napping" / "tapping" / "rapping"). So at least nine words in each six-line stanza are involved in the regular rhyme scheme, and many stanzas have added instances of rhyme or repetition. As if this were not enough, all the half-line rhymes are rich feminine rhymes, where both the accented and the following unaccented syllables rhyme— "dreary" / "wary."