\(8^5 = 32768\) words.
\(8\cdot 7\cdot 6\cdot 5\cdot 4 = 6720\) words.
\(8 \cdot 8 =64\) words.
\(64 + 64 - 0 = 128\) words.
\((8\cdot 7\cdot 6\cdot 5\cdot 4) - 3\cdot (5\cdot 4) = 6660\) words.