C11112331333132311331333133313331333112211231211111133132313233321   >>    C1111233133313231133133313331333133311221123121111113313231323332   <<    C11112331333132311331333133313331333112211231211111133132313233323   >>      C11112331333132311331333133313331333112211231211111133132313233322   >>