C11111333133313232233133313331333131133132313331322133313223312111   >>    C1111133313331323223313331333133313113313231333132213331322331211   <<    C11111333133313232233133313331333131133132313331322133313223312113   >>      C11111333133313232233133313331333131133132313331322133313223312112   >>