These augmented forms are semantically productive but not restricted to one meaning each.
FormPatternImportant functionsExample
IVأَفْعَلَCausation, transformation, removal, finding, equivalenceأَكْرَمَ
IIفَعَّلَCausation, repetition, removal, intensity, attributionعَلَّمَ
VتَفَعَّلَResponsiveness, effort, avoidance, gradual processتَعَلَّمَ
عَلَّمْتُهُ فَتَعَلَّمَ
Translation: I taught him, and he learned.
Causation, repetition, and responsiveness are distinguishable semantic functions; inspect the lexical usage and sentence, not just the formula.