3B1 expresses doubt around the function, in fact expects it not to occur. 3B2 expresses uncertainty, it might or may not take place. 3B3 expects that it'll take place. I rarely see any in the 4 versions outlined in the original put up. All 4 of such variations are correct. https://petskyonline-onlinestrore.blogspot.com/2025/07/top-10-aquarium-essentials-for-new-fish.html