C112233313331323223313331311331323133313331313231333131111211312111   >>    C11223331333132322331333131133132313331333131323133313111121131211   <<    C112233313331323223313331311331323133313331313231333131111211312113   >>      C112233313331323223313331311331323133313331313231333131111211312112   >>