file11.txt: 1: hello world
file12.txt: 1: hello world!
                          ^
file11.txt: 3: hello worlddd
file12.txt: 3: hello worldd
                           ^
file11.txt: 7: how was your day?
file12.txt: 7: how was today?
                       ^
file11.txt: 9: what is the date?
file12.txt: 9: whet is the date today?
                 ^
file11.txt: 10: sadkfj
file12.txt: 10: sadkfl
                     ^
file11.txt: 11: sdafsfsdfsf
file12.txt: 11: 
                ^
file11.txt: 12: sadfjsdakjfbsakjdbfkjds
file12.txt: 12: 
                ^
file11.txt: 13: 
file12.txt: 13: cxmvbxcmv
                ^
file11.txt: 14: 
file12.txt: 14: xcvxc
                ^
file11.txt: 15: 
file12.txt: 15: eirwwer
                ^
file11.txt: 16: 
file12.txt: 16: werwe
                ^
file11.txt: 17: 
file12.txt: 17: werwewer
                ^
file11.txt: 18: 
file12.txt: 18: werwe
                ^
file11.txt: 20: Hallo
file12.txt: 20: Hello
                 ^
file11.txt: 25: World!
file12.txt: 25: World????
                     ^
file11.txt: 100: This is lne 100
file12.txt: 100: This is line 100
                          ^
file11.txt: 101: 
file12.txt: 101: This is line 101
                 ^
file11.txt: 102: 
file12.txt: 102: file12.txt is longer
                 ^