consists of a sequence of letters, digits, and underscores, or as a sequence of other nonblank characters separated with whitespace.
consists of a sequence of nonblank characters separated with whitespace.
e.g. we're going too slow
this contains five WORDS and ten words. because periods and apostrophes count as words.
words
append at the end of the current word.
append at the end of the previous word.
WORDS
