I'm an English learner. I know [ She can't have taken a wrong train ] But [ She can have taken a wrong train. ] Is strange?

Hi, everyone. I have learned the following sentences at my English class. 1. [ She could have taken a wrong train.] 2. [ She couldn’t have taken a wrong train.] I can understand the two sentences’ meaning. But what about this? 3. [ She can have taken a wrong train. ] Can’t you use [ can + have past participle... show more Hi, everyone. I have learned the following sentences at my English class.
1. [ She could have taken a wrong train.]
2. [ She couldn’t have taken a wrong train.]
I can understand the two sentences’ meaning. But what about this?
3. [ She can have taken a wrong train. ]

Can’t you use [ can + have past participle ] in affirmative sentences?

Thank you in advance.
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