Some forms begin with the same letter but refer to different subjects. Compare:
تَفْعَلُ can be third-person feminine singular or second-person masculine singular.
تَفْعَلِينَ is second-person feminine singular.
يَفْعَلْنَ is third-person feminine plural.
أَفْعَلُ is first-person singular, while نَفْعَلُ is first-person plural.
The prefix narrows the choice; the ending completes the identification.
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Present-Tense Verb: Signs and Three Paradigms
Some forms begin with the same letter but refer to different subjects. Compare:
تَفْعَلُ can be third-person feminine singular or second-person masculine singular.
تَفْعَلِينَ is second-person feminine singular.
يَفْعَلْنَ is third-person feminine plural.
أَفْعَلُ is first-person singular, while نَفْعَلُ is first-person plural.
The prefix narrows the choice; the ending completes the identification.