«فطرفاها إما شبيهان بحمليتين، أو متصلتين، أو منفصلتين، أو مختلفتين»
The two sides may be similar to two categorical propositions, two connected conditionals, two disjunctive conditionals, or may differ in kind.
Similar means that both sides have the same logical form, not identical wording or subject matter. Different means that the sides belong to different structural classes, such as a categorical and a connected conditional.
This simple division leads to the commentary's nine connected-conditional patterns and six disjunctive-conditional patterns.