'twas the night before christmas, when all through the house
not a creature was stirring, not even a mouse;
the stockings were hung by the chimney with care,
in hopes that st. nicholas soon would be there;
the children were nestled all snug in their beds,
while visions of sugar-plums danced in their heads;
and mamma in her ’kerchief, and i in my cap,
had just settled our brains for a long winter’s nap,

a.
every other line rhymes
c.
there is no rhyme
b.
every two lines rhyme together
d.
every fourth line rhymes