C11111333133313232233133313331333133313223313331323132233133312112121   >>    C1111133313331323223313331333133313331322331333132313223313331211212   <<    C11111333133313232233133313331333133313223313331323132233133312112123   >>      C11111333133313232233133313331333133313223313331323132233133312112122   >>