C11112331333132311331333133313331333132311213331211331313311211   >>    C1111233133313231133133313331333133313231121333121133131331121   <<    C11112331333132311331333133313331333132311213331211331313311213   >>      C11112331333132311331333133313331333132311213331211331313311212   >>