ثَقِفْتُمْ • (ṯaqiftum) (form I)
ثَقُفْتُمْ • (ṯaquftum) (form I)
ثُقِفْتُمْ • (ṯuqiftum) (form I)
ثَقَّفْتُمْ • (ṯaqqaftum) (form II)
ثُقِّفْتُمْ • (ṯuqqiftum) (form II)