Proverbs 30:15; Proverbs 30:18; Proverbs 30:21; Proverbs 30:29

15 The leech has two suckers that cry out, "More, more!" There are three other things -- no, four! -- that are never satisfied:
18 There are three things that amaze me -- no, four things I do not understand:
21 There are three things that make the earth tremble -- no, four it cannot endure:
29 There are three stately monarchs on the earth -- no, four: