A
a
ans = 0
---------------------
A
A
ans = 0
---------------------
aB
ans = 2
---------------------
asasa.!sds
sdsdsd!!!..::dsd
ans = 3
---------------------
-a.
ans = 1
--------------------
090aA is a number.
ans = 2
--------------------
this sentence have one mistake
ans = 1
--------------------
Hello! 238 my Friend
ans = 1
--------------------
Asf,.,a
ans = 1
--------------------