C111123313331323113313331333133313331122112312111133133313331121131311   >>    C11112331333132311331333133313331333112211231211113313331333112113131   <<    C111123313331323113313331333133313331122112312111133133313331121131313   >>      C111123313331323113313331333133313331122112312111133133313331121131312   >>