Rules are well known.

_ _ _ _ _ _ _  (7 Letters) |  _______

A

A

You already guessed A

_ _ A _ _ _ _

E

_ _ A _ _ E _

I

_ _ A _ _ E _

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|
|
|___________
Used Letters AEI

O

_ _ A _ _ E _

|/
|
|
|___________
Used Letters AEIO

U

U

U

I'll ignore the other 2 Us, so you aren't hung...

_ _ A _ _ E _ _

_____________
|/
|
|
|___________
Used Letters AEIOU

T

s

5

S _ A _ _ E _ _

_____________
|/'''''''''''''''''''''''''''''|
|''''''''''''''''''''''''''''''@
|
|___________
Used Letters AEIOUST5