C11111333133313232233133313331333133313221333133313232112323112221311   >>    C1111133313331323223313331333133313331322133313331323211232311222131   <<    C11111333133313232233133313331333133313221333133313232112323112221313   >>      C11111333133313232233133313331333133313221333133313232112323112221312   >>