A popular song sung at the seder is Adir Hu. The song contains many phrases of the pattern:
[Adjective] is He.
that are grouped together alphabetically with a refrain asking for the speedy building of the Third Temple.
The five stanzas of the song contain adjectives that start with the letters א, ב-ד, ה-ח, ט-צ, ק-ת repectively. That's 1, 3, 4, 10, 4 adjectives per stanza. Why is it broken up in this way? Wouldn't it make more sense to do 5, 5, 5, 5, 2 or 4, 5, 4, 5, 4?