C111112111133131121133133313331333131333132322331333132313231333133313223111   >>    C11111211113313112113313331333133313133313232233133313231323133313331322311   <<    C111112111133131121133133313331333131333132322331333132313231333133313223113   >>      C111112111133131121133133313331333131333132322331333132313231333133313223112   >>