C11111333133313232233133313331333133313331312111112113311233131   >>    C1111133313331323223313331333133313331333131211111211331123313   <<    C11111333133313232233133313331333133313331312111112113311233133   >>      C11111333133313232233133313331333133313331312111112113311233132   >>