Explanation
This is a handy acronym to help you remember the German accusative prepositions. Take the first letter of each word: O, FUDGE → O-F-U-D-G-E, standing for ohne, für, um, durch, gegen, entlang.
Note: entlang is a two-way preposition: it's accusative when it follows its noun (den Fluss entlang), but genitive or dative when it precedes it (entlang des Flusses).