Hello, i try send my programm but always get some WA. Can you explaint few things.
First:
In END of input ".?!"? When i added check for it i get 1WA.
Second:
"ssss[S]ssss" r there mistake? When i check for it i get 2WA
Third:
When i delete this conditions i get 10WA.
Im confused. I've readed all threads and added conditions for every case which i found. What in 10 test?

I guess the 10-th test checks for your attintive reading of the condition: "1. The first LETTER in a sentence is small."

For example, the text

"Hello! 238 my Friend"

has an error, because the first letter in the second sentence is NOT the digit '2' but the letter 'm' which must be capital.