C313131323331311331322331322331311211331323331322331323131232313223311   >>    C31313132333131133132233132233131121133132333132233132313123231322331   <<    C313131323331311331322331322331311211331323331322331323131232313223313   >>      C313131323331311331322331322331311211331323331322331323131232313223312   >>