C11112331333132311331333133313331312111113311212111133132313231221   >>    C1111233133313231133133313331333131211111331121211113313231323122   <<    C11112331333132311331333133313331312111113311212111133132313231223   >>      C11112331333132311331333133313331312111113311212111133132313231222   >>