C1111233133313231133133313331333133313231323331333133313112221111112131   >>    C111123313331323113313331333133313331323132333133313331311222111111213   <<    C1111233133313231133133313331333133313231323331333133313112221111112133   >>      C1111233133313231133133313331333133313231323331333133313112221111112132   >>