C1111233133313231133133313331333133313231323331333133313112113121321   >>    C111123313331323113313331333133313331323132333133313331311211312132   <<    C1111233133313231133133313331333133313231323331333133313112113121323   >>      C1111233133313231133133313331333133313231323331333133313112113121322   >>