C313131323331311331322331322331311211331323331313331323331323132322132313221   >>    C31313132333131133132233132233131121133132333131333132333132313232213231322   <<    C313131323331311331322331322331311211331323331313331323331323132322132313223   >>      C313131323331311331322331322331311211331323331313331323331323132322132313222   >>