C1111233133313231133133313331333133313231232313331323133311221121   >>    C111123313331323113313331333133313331323123231333132313331122112   <<    C1111233133313231133133313331333133313231232313331323133311221123   >>      C1111233133313231133133313331333133313231232313331323133311221122   >>