C111123313331323113313331333133313331323133113313331333131323132313223111   >>    C11112331333132311331333133313331333132313311331333133313132313231322311   <<    C111123313331323113313331333133313331323133113313331333131323132313223113   >>      C111123313331323113313331333133313331323133113313331333131323132313223112   >>