C111123313331323113313331333133313331323133113313331323132313231322123131221   >>    C11112331333132311331333133313331333132313311331333132313231323132212313122   <<    C111123313331323113313331333133313331323133113313331323132313231322123131223   >>      C111123313331323113313331333133313331323133113313331323132313231322123131222   >>