I want input and output of testcase 2

[kritianu009_08c047efae64de5e]

I print Lowercase, Uppercase and Invalid
is output format is correct or should I print like
(lowercase, uppercase and invalid ) or (LOWERCASE, UPPERCASE AND INVALID)

please clear my doubt as soon as possible.

[talhashamim001 (Talha Shamim)]

hi @kritianu009_08c047efae64de5e which batch or which course? send me your e mail, as your doubt is not reaching any TA