C11112331312111112111133133313231333133313311211331313331333133313231   >>    C1111233131211111211113313331323133313331331121133131333133313331323   <<    C11112331312111112111133133313231333133313311211331313331333133313233   >>      C11112331312111112111133133313231333133313311211331313331333133313232   >>