C3121113331313231323132333131313231323131323223313233313233313232233221111
>>
C312111333131323132313233313131323132313132322331323331323331323223322111
<<
C3121113331313231323132333131313231323131323223313233313233313232233221113
>>
C3121113331313231323132333131313231323131323223313233313233313232233221112
>>