C1111233133313231133133313331333133313231323331333133313112231221   >>    C111123313331323113313331333133313331323132333133313331311223122   <<    C1111233133313231133133313331333133313231323331333133313112231223   >>      C1111233133313231133133313331333133313231323331333133313112231222   >>