DP - Ways to write word

What are the total number of ways in which you can write a word, given number of each vowels that can be used, print that number of ways modulo 10^9+7. In that word, same vowel can be repeated contiguously,(boldness for emphasis). Check example just below: Example: aba is same as aaba, abaa, abaaaaa, abaaaaaaaaa,aaaaba,aaabaaa. But consonants must be placed as it is between the vowels. You will