C11111333133313232233133313331333133313231333133311233133311231   >>    C1111133313331323223313331333133313331323133313331123313331123   <<    C11111333133313232233133313331333133313231333133311233133311233   >>      C11111333133313232233133313331333133313231333133311233133311232   >>