Complex sentence: When using a standard 52-card deck with no wild cards, there are nine basic hand categories, which are ranked in descending order of the probability of a hand in any given category being dealt from a well-shuffled deck.
Split into simpler sentences: When using a standard 52-card deck with no wild cards, there are nine basic hand categories. These categories are ranked by descending probability of a hand in any given category being dealt from a well-shuffled deck.