C313131323331311331322331322331311211331323331313331323133313113131   >>    C31313132333131133132233132233131121133132333131333132313331311313   <<    C313131323331311331322331322331311211331323331313331323133313113133   >>      C313131323331311331322331322331311211331323331313331323133313113132   >>