C1111233133313231133133313331333133313231232313331333131121231211   >>    C111123313331323113313331333133313331323123231333133313112123121   <<    C1111233133313231133133313331333133313231232313331333131121231213   >>      C1111233133313231133133313331333133313231232313331333131121231212   >>