Looking on the internet deeply has found these results:

i still may be in the library is the most popular phrase on the web.

i may still be in the library 137,600,000 results on the web	i still may be in the library 166,100,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
You still owe the library $294.68 in late fees. Do you think William's still in the library? I may still be here when you get back. the Library, the Doctor, me. The real case never left, it's still in the library. The memories are all still there I believe I may still be owed a few dividends.	She holds the answers to all of our questions, like, "will you marry me," and "why are there still libraries." You still owe the library $294.68 in late fees. However, cultural and legal problems associated with the mass digitisation of books, including those currently held by European libraries, still remain to be overcome. The real case never left, it's still in the library. The memories are all still there Do you think William's still in the library? the Library, the Doctor, me.

i may still be in the library

137,600,000 results on the web

i still may be in the library

166,100,000 results on the web

More popular!

She holds the answers to all of our questions, like, "will you marry me," and "why are there still libraries."
You still owe the library $294.68 in late fees.
However, cultural and legal problems associated with the mass digitisation of books, including those currently held by European libraries, still remain to be overcome.
The real case never left, it's still in the library.
The memories are all still there
Do you think William's still in the library?
the Library, the Doctor, me.