C313131323331311331322331322331311211331323331313331323331323223313223331   >>    C31313132333131133132233132233131121133132333131333132333132322331322333   <<    C313131323331311331322331322331311211331323331313331323331323223313223333   >>      C313131323331311331322331322331311211331323331313331323331323223313223332   >>