עֲטָר֤וֹת וְדִיבֹן֙ וְיַעְזֵ֣ר וְנִמְרָ֔ה וְחֶשְׁבּ֖וֹן וְאֶלְעָלֵ֑ה וּשְׂבָ֥ם וּנְב֖וֹ וּבְעֹֽן׃
עַטָרוֹת, און דיבֿוֹן, און יַעְזֵר, און נִמרָה, און חֶשבוֹן, און אֶלעָלֵה, און שׂבֿם, און נבֿוֹ, און בעוֹן,
Rashi
עטרות ודיבון וגו׳ ATOROTH AND DIBON etc. — These belonged to the land of Sihon and Og.
Or HaChaim
עטרות ודיבון, "Attarot and Divon, etc." Why did they have to spell out all the names of the cities they claimed for themselves as an inheritance? Why did they not simply say: "the land which G'd smote, etc.?" Or, they could have detailed districts as described in 32,1 i.e. ארץ יעזר ואת ארץ גלעד? Furthermore, What need was there for them to say הארץ אשר הכה השם? Were there then any other lands which G'd had smitten? Who would not have known which lands the tribes of Reuven and Gad referred to?