Crossword puzzle clue "puts in alphabetical order"

Puts in alphabetical order

Vowels, in alphabetical order

Somewhat suspect (and a hint to what can be found by connecting the circled letters in alphabetical order)

Alphabetical order?

Only 20th-century president whose three distinct initials are in alphabetical order

Alphabetical order?

They're often called out in alphabetical order in a roll call

Shape formed by connecting the circled letters in alphabetical order, plus one more connection back to A