C11111333133313232233133313331333133313221333133313232212111133131311311   >>    C1111133313331323223313331333133313331322133313331323221211113313131131   <<    C11111333133313232233133313331333133313221333133313232212111133131311313   >>      C11111333133313232233133313331333133313221333133313232212111133131311312   >>