C111123313331323113313331333133313331122112312111133133323213331111   >>    C11112331333132311331333133313331333112211231211113313332321333111   <<    C111123313331323113313331333133313331122112312111133133323213331113   >>      C111123313331323113313331333133313331122112312111133133323213331112   >>