Arabic uses distinct plural forms even when an English translation merely says “they,” “you all,” or “we.”
Word / formMeaning / explanation
فَعَلُواthey (men) did; masculine third-person plural.
فَعَلْنَthey (women) did; feminine third-person plural.
فَعَلْتُمْyou men did; masculine second-person plural.
فَعَلْتُنَّyou women did; feminine second-person plural.
فَعَلْنَاwe did; first-person plural for either gender.
The endings ـوا، ـنَ، ـتُمْ، ـتُنَّ، ـنَا cannot be exchanged merely because every form refers to multiple people.