C111113331333132322331333133313331333132313131312111133132313233311232313111   >>    C11111333133313232233133313331333133313231313131211113313231323331123231311   <<    C111113331333132322331333133313331333132313131312111133132313233311232313113   >>      C111113331333132322331333133313331333132313131312111133132313233311232313112   >>