C1111233133313231133133313331333133311221123121111121111132233231   >>    C111123313331323113313331333133313331122112312111112111113223323   <<    C1111233133313231133133313331333133311221123121111121111132233233   >>      C1111233133313231133133313331333133311221123121111121111132233232   >>