C11112331333132311331333133313331333132312323133313331311212312111   >>    C1111233133313231133133313331333133313231232313331333131121231211   <<    C11112331333132311331333133313331333132312323133313331311212312113   >>      C11112331333132311331333133313331333132312323133313331311212312112   >>