From Wiktionary, the free dictionary
دَفَفْتُمْ • (dafaftum) (form I) /da.faf.tum/
- second-person masculine plural past active of دَفَّ (daffa)
دففتم (form II)
- دَفَّفْتُمْ (daffaftum) /daf.faf.tum/: second-person masculine plural past active of دَفَّفَ (daffafa)
- دُفِّفْتُمْ (duffiftum) /duf.fif.tum/: second-person masculine plural past passive of دَفَّفَ (daffafa)