C111113331333132322331333133313331333132313131312111133132212111   >>    C11111333133313232233133313331333133313231313131211113313221211   <<    C111113331333132322331333133313331333132313131312111133132212113   >>      C111113331333132322331333133313331333132313131312111133132212112   >>