[Grammar] the same/very ... (that ...)

[inase]

I wonder if:
1. Sentence 1 is different from sentence 5 in meaning (as shown below).
2. Sentences 3 and 4 are not used.
3. Sentences 1 and 6 share the same meaning.
4. Sentences 8 and 9 are grammatically correct.

Example sentences
1. She is the same person I saw at the station yesterday. (exactly the same person)
2. She is the same person that I saw at the station yesterday.
3. She is the same person who I saw at the station yesterday.
4. She is the same person whom I saw at the station yesterday.
5. She is the same person as I saw at the station yesterday. (the same kind of person)
6. She is the very person I saw at the station yesterday.
7. She is the very person that I saw at the station yesterday.
8. She is the very person who I saw at the station yesterday.
9. She is the very person whom I saw at the station yesterday.

Inase

 

[Raymott]

5. isn't a correct sentence.
3. is OK. 4. is technically correct, but very few people would say 'whom' there.
1. and 6. mean the same.
8. and 9. - same as 3. and 4.