parse
DECLARE
BEGIN
  EXIT some_label;
  EXIT some_label WHEN some_condition;
END
----
DECLARE
BEGIN
EXIT some_label;
EXIT some_label WHEN some_condition;
END;
 -- normalized!
DECLARE
BEGIN
EXIT some_label;
EXIT some_label WHEN (some_condition);
END;
 -- fully parenthesized
DECLARE
BEGIN
EXIT some_label;
EXIT some_label WHEN some_condition;
END;
 -- literals removed
DECLARE
BEGIN
EXIT _;
EXIT _ WHEN _;
END;
 -- identifiers removed

parse
DECLARE
BEGIN
  CONTINUE some_label;
  CONTINUE some_label WHEN some_condition;
END
----
DECLARE
BEGIN
CONTINUE some_label;
CONTINUE some_label WHEN some_condition;
END;
 -- normalized!
DECLARE
BEGIN
CONTINUE some_label;
CONTINUE some_label WHEN (some_condition);
END;
 -- fully parenthesized
DECLARE
BEGIN
CONTINUE some_label;
CONTINUE some_label WHEN some_condition;
END;
 -- literals removed
DECLARE
BEGIN
CONTINUE _;
CONTINUE _ WHEN _;
END;
 -- identifiers removed
