C3121113331313231323132333131313231323131323223313233313233313112211231212121
>>
C312111333131323132313233313131323132313132322331323331323331311221123121212
<<
C3121113331313231323132333131313231323131323223313233313233313112211231212123
>>
C3121113331313231323132333131313231323131323223313233313233313112211231212122
>>