themselves和theirselves分别是什么意思?用法一样么?请麻烦再列举关于单词后缀是self和selves

themselves
pron.（代词）
他们自己,她们自己,它们自己,他们亲自,她们亲自,它们亲自
Those ones identical with them:
他们自己：与他们自己一致的
Used reflexively as the direct or indirect object of a verb or as the object of a preposition:
他们自己：反身用作动词的直接或间接宾语或介词宾语：
prepared themselves for the trip; gave themselves plenty of time; were left to themselves.
为他们自己准备旅行；给他们自己充足的时间；留给他们自己
Used for emphasis:
他们本身：用于强调：
The cooks themselves eat after all the guests have finished.
厨师们等客人吃完后才吃
Used in an absolute construction:
用于独立结构中：
Newcomers themselves,they knew few people at the party.
新来的人,他们在舞会上几乎不认识什么人
Their normal or healthy condition:
他们的正常或健康状况：
The members of the crew were themselves again after the crisis passed.
危机过后,全体船员又恢复了正常
theirselves
pron.
=themselves
selves 是self的复数表现开式,
如:myself--ourselves