From Wiktionary, the free dictionary
أَبَدْتُمْ • (ʔabadtum) (form I) /ʔa.bad.tum/
- second-person masculine plural past active of أَبَدَ (ʔabada)
أبدتم (form II)
- أَبَّدْتُمْ (ʔabbadtum) /ʔab.bad.tum/: second-person masculine plural past active of أَبَّدَ (ʔabbada)
- أُبِّدْتُمْ (ʔubbidtum) /ʔub.bid.tum/: second-person masculine plural past passive of أَبَّدَ (ʔabbada)