C11112331333132311331333133313331333112211231211111133132332211   >>    C1111233133313231133133313331333133311221123121111113313233221   <<    C11112331333132311331333133313331333112211231211111133132332213   >>      C11112331333132311331333133313331333112211231211111133132332212   >>