C111113331333132322331333133313331331121111121133131133132313121123232311   >>    C11111333133313232233133313331333133112111112113313113313231312112323231   <<    C111113331333132322331333133313331331121111121133131133132313121123232313   >>      C111113331333132322331333133313331331121111121133131133132313121123232312   >>