4@Chin-FingerUp RoundMidline 4@FromChin-FingerUp

Etymology
ASL compounding of and.

Production

 * Move the hand in an arc, first down, the forward.
 * Move the hand in an arc, first down, the forward.
 * Move the hand in an arc, first down, the forward.

Adjective

 * 1)  four years old
 * (ASL gloss) ME HAVE 2 SON. 2-LIST. 1ST-OF-2-LIST, FOUR-YEARS-OLD. 2ND-OF-2-LIST, TWO-YEARS-OLD.
 * — “I have two sons. The first is four years old. The second is two years old.”