#!/usr/bin/python

import sys, string

def is_punct(word):
    return word[:7] == "*punct*"

def massage_sentence(sentence):

    new_sentence = []

    # merge adjacent duplicate punctuation
    prev = None
    for word in sentence:
        if is_punct(word) and word == prev:
            word = None
        if word:
            new_sentence.append(word)
        prev = word

    return new_sentence
        

def valid_sentence(sentence):

    # Drop sentences that are freakishly short.
    if len(sentence) < 5:
        #sys.stderr.write("sentence too short: %s\n" % txt)
        return 0

    # Drop sentences with leading punctuation.
    if sentence[0].find("*punct*") != -1:
        return 0

    # Drop sentences w/ weird one-character words
    for word in sentence:
        if len(word) == 1 and word not in "aio0123456789&":
            #sys.stderr.write("bad one-char word  '%s' in %s\n" % (word, txt))
            return 0

    # Drop sentences w/ adjacent punctuation items
    prev = sentence[0]
    for word in sentence[1:]:
        if word[:7] == "*punct*" and prev[:7] == "*punct*":
            #sys.stderr.write("adjacent punct: %s %s %s\n" % (prev, word, txt))
            return 0
        prev = word

    return 1

total = 0
valid = 0
sentence = []
for token in sys.stdin.xreadlines():
    token = token.strip()
    sentence.append(token)
    if token == "*break*":
        sentence = massage_sentence(sentence)
        total += 1
        if valid_sentence(sentence):
            valid += 1
            for x in sentence:
                print x
        sentence = []

invalid = total-valid

sys.stderr.write("Found %d sentences.\n" % total)
sys.stderr.write("Dropped %d as invalid (%.1f%%).\n" % (invalid, 100.0*invalid/total))