Simple triliteral verbs exhibit many masdar patterns, often lexically established. Derived forms are more regular, but still require checking actual usage.
VerbVerbal nounPattern
قَالَقَوْلٌBasic triliteral
رَمَىرَمْيٌBasic triliteral
عَلَّمَتَعْلِيمٌForm II
تَعَلَّمَتَعَلُّمٌForm V
اِسْتَغْفَرَاِسْتِغْفَارٌForm X
Do not require every basic triliteral to use one universal verbal-noun template.