C11112331333132311331333133313331333132311213331333133313231323222232132231   >>    C1111233133313231133133313331333133313231121333133313331323132322223213223   <<    C11112331333132311331333133313331333132311213331333133313231323222232132233   >>      C11112331333132311331333133313331333132311213331333133313231323222232132232   >>