C11112331333132311331333133313331333132332322133313231323132311211   >>    C1111233133313231133133313331333133313233232213331323132313231121   <<    C11112331333132311331333133313331333132332322133313231323132311213   >>      C11112331333132311331333133313331333132332322133313231323132311212   >>