C11112331333132311331333133313331323132313331211113313133313231321113111   >>    C1111233133313231133133313331333132313231333121111331313331323132111311   <<    C11112331333132311331333133313331323132313331211113313133313231321113113   >>      C11112331333132311331333133313331323132313331211113313133313231321113112   >>