12
One family descended from Gad's first son Joel. Another family descended from Gad's second son Shapham. Other families descended from Gad's sons Janai and Shaphat in Bashan.
12
Joel was in the beginning, and Shapham was the second; also Jaanai and Shaphat were in Bashan. (Joel was the leader, and Shapham was the second; and Jaanai and Shaphat were in Bashan.)