C11111333133313232233133313331333133313231333133313332322321132113121   >>    C1111133313331323223313331333133313331323133313331333232232113211312   <<    C11111333133313232233133313331333133313231333133313332322321132113123   >>      C11111333133313232233133313331333133313231333133313332322321132113122   >>