C313131323331311331322331322331311211331323331322331323133313123123231   >>    C31313132333131133132233132233131121133132333132233132313331312312323   <<    C313131323331311331322331322331311211331323331322331323133313123123233   >>      C313131323331311331322331322331311211331323331322331323133313123123232   >>