C3121113331313231323132333131313231323131323223313233313233313232213123231111
>>
C312111333131323132313233313131323132313132322331323331323331323221312323111
<<
C3121113331313231323132333131313231323131323223313233313233313232213123231113
>>
C3121113331313231323132333131313231323131323223313233313233313232213123231112
>>