按笔记代表词的首字母归档；各词族已收录的成员如下。
- implement：implement、implementation、implemented
- improve：improve、improvement、improved
- in：in
- incident：incident
- include：include、inclusion、inclusive
- inspect：inspect、inspection、inspector
- insure：insure、insurance、insurer
- intend：intend、intention、intended、unintended
- into：into
- invest：invest、investment、investor
- invoice：invoice、invoicing、invoices
返回单词目录。