C11112331312111112111133133313231333133313311211331313331333133313232111   >>    C1111233131211111211113313331323133313331331121133131333133313331323211   <<    C11112331312111112111133133313231333133313311211331313331333133313232113   >>      C11112331312111112111133133313231333133313311211331313331333133313232112   >>