A nonempty word is called pronounceable if it alternates in vowels (\mathrm{A}, \mathrm{E}, \mathrm{I}, \mathrm{O}, \mathrm{U}) and consonants (all other letters) and it has at least one vowel. How many pronounceable words can be formed using the letters \mathrm{P}, \mathrm{U}, \mathrm{M}, \mathrm{A}, \mathrm{C} at most once each?