C1111233133313231133133313331333133313233231133133313331312312121   >>    C111123313331323113313331333133313331323323113313331333131231212   <<    C1111233133313231133133313331333133313233231133133313331312312123   >>      C1111233133313231133133313331333133313233231133133313331312312122   >>