C111113331333132322331333133313331333132313121111331311233131133132312111   >>    C11111333133313232233133313331333133313231312111133131123313113313231211   <<    C111113331333132322331333133313331333132313121111331311233131133132312113   >>      C111113331333132322331333133313331333132313121111331311233131133132312112   >>