Following are a number of back-translations as well as a sample translation for translators of Joshua 12:2:

• Kupsabiny: “One king was Sihon of the Amorites who lived in Heshbon and he ruled from Aroer in the ridge that overlooks the valley of Arnon. It enveloped the (area) south of Gilead until the river Jabbok which was the border to the Ammonites.” (Source: Kupsabiny Back Translation)
• Newari: “One was Sihon, king of the Amorites who lived in Heshbon. He reigned from Aroer city, which is above the Arnon gorge, up to the Jabbok river, which is the border of the Ammonites, Half of Gilead was also included in that area.” (Source: Newari Back Translation)
• Hiligaynon: “The Israelinhon had- now -subjected/brought-under-(their)-jurisdiction the land in the east of Jordan, from the Arnon channel/water-course/place-where- the water -flows up-to the Mountain of Hermon, including now here the land in/to the east of the Valley of Jordan. These are the kings in those places who were-defeated by the Israelinhon:
  Sihon the Amornon who was-living in Heshbon. The jurisdiction of his kingdom (was) half of Gilead. This (was) from Aroer beside the Arnon channel/water-course of water, and from this half up-to the River of Jabok, the border of the Ammonhon.” (Source: Hiligaynon Back Translation)
• English: “One of them was Sihon, the king of the Amor people-group. He lived in Heshbon city and ruled over the area from Aroer town along the Arnon River Gorge, north to the Jabbok River. His land started in the middle of the gorge, which was the border between his land and the land of the Ammon people-group. Sihon also ruled over the southern half of the Gilead region,” (Source: Translation for Translators)