● Study the complete forms of the preposition فِي, 'in,' with attached pronouns:
Person and genderSingularDualPlural
Third-person masculineفِيهِفِيهِمَافِيهِمْ
Third-person feminineفِيهَافِيهِمَافِيهِنَّ
Second-person masculineفِيكَفِيكُمَافِيكُمْ
Second-person feminineفِيكِفِيكُمَافِيكُنَّ
First personفِيَّفِينَافِينَا
● Explanation: In the first-person singular, the final yāʾ and the first-person singular yāʾ combine as a doubled yāʾ: فِيَّ.