C11111333133313232233133313331333133313331233132313331313123121   >>    C1111133313331323223313331333133313331333123313231333131312312   <<    C11111333133313232233133313331333133313331233132313331313123123   >>      C11111333133313232233133313331333133313331233132313331313123122   >>