They do, (thanks, Arrkk) and that’s a better answer.
But the schoolmarm in me brings me back to tell you that, because of the “y-” in the way “union” is pronounced, standard usage is “a union” even though it starts with a vowel. The reason we use “an” is to avoid an awkward slide from the a to the vowel, but in words that start with the “you-” sound it’s not necessary.
A ugly bastard An ugly bastard
A onion An onion
An unicorn A unicorn
That’s me done, and a gold star to you on catching my original error!
They do, (thanks, Arrkk) and that’s a better answer.
But the schoolmarm in me brings me back to tell you that, because of the “y-” in the way “union” is pronounced, standard usage is “a union” even though it starts with a vowel. The reason we use “an” is to avoid an awkward slide from the a to the vowel, but in words that start with the “you-” sound it’s not necessary.
A ugly bastardAn ugly bastardA onionAn onionAn unicornA unicornThat’s me done, and a gold star to you on catching my original error!