1)
Here it lists Besul. Above (15:30), it lists Kesil in place of it!
1.
Bi'ur ha'Gra (3,4), Malbim (3,4): These are the same. Also Balah (verse 3) is Ba'alah (15:29).
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This is unlike Radak (refer to 15:32:1:1) who says that they are different, in order to justify the count of 29 cities (15:32).