根据频繁标记frequent_token,累加size

for k, v in contents.items():

0 ('LDAP Built with OpenLDAP LDAP / SDK', '/:=@')
1 ('LDAP SSL support unavailable', ':')
2 ('suEXEC mechanism enabled lili wrapper /usr/sbin/suexec', '()/:')
3 ('Digest generating secret for digest authentication ...', '.:')
4 ('Digest done', ':')
5 ('LDAP Built with OpenLDAP LMAP SDK', ':')
6 ('LDAP SSL support available', ':')
7 ('Factory error creating channel.jni jni channel.jni jni', '().:')
8 ("config.update Can't create channel.jni jni", "'().:")

frequent_token=tuple(sorted(vocab.topk_token