Case A: Forty people repeat a claim, but all learned it from one unknown individual. Later popularity does not remove the single point of origin; a large final count alone does not demonstrate tawatur.
Case B: There is sufficient multiplicity at each stage, and the ultimate report is sensory, but the evidence presently considered does not yield certainty. The fourth condition remains unresolved.
Case C: Every stage has adequate independent transmission, ordinary collusion is impossible, the origin is perceptual, and the report yields certainty. This illustrates the complete set of requirements.
Knowing the list of conditions and applying all of them to an actual report are different levels of understanding.