3B1 expresses doubt about the function, certainly expects it not to occur. 3B2 expresses uncertainty, it might or may not take place. 3B3 expects that it will transpire. I hardly ever see any on the four variations pointed out in the original post. All 4 of those variations are proper. https://petskyonline-onlinestrore.blogspot.com/2025/07/top-10-aquarium-essentials-for-new-fish.html