From Ada 95 Language Reference Manual - words in blue

were not reserved words in the Ada 83 Language Reference Manual

abort	else	new	return
abs	elsif	not	reverse
abstract	end	null
accept	entry		select
access	exception	of	separate
aliased	exit	or	subtype
all		others
and	for	out	tagged
array	function		task
at		package	terminate
	generic	pragma	then
begin	goto	private	type
body		procedure
	if	protected	until
case	in		use
constant	is	raise
		range	when
declare	limited	record	while
delay	loop	rem	with
delta		renames
digits	mod	requeue	xor
do