Error 1: Concealing every still nun with nasalization. Correction: Throat letters require clarity, while lam or ra requires assimilation without ghunnah.
Error 2: Concealing every still mim as though ba always followed. Correction: Ba causes labial concealment, mim causes assimilation, and other letters require clear articulation.
Error 3: Assimilating nun into ya in «دُنْيَا». Correction: This is a special same-word case of absolute clarity.
Error 4: Pronouncing a separate clear nun in «مِنْ بَعْدِ». Correction: Before ba, conversion toward mim with ghunnah is required.
Error 5: Swallowing the next letter because of ghunnah. Correction: After concealment or conversion, the following ba, qaf, fa, or other consonant must remain recognizable.