Generating random 6-character strings

How many possible words of length 6 can be generated from the lowercase English alphabet if each word starts with a random consonant and then alternates between vowels and consonants?

What if I add numbers to my alphabet?

See also this question .

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I guess this is related to this question / answer if then the number of possibilities in this case (6 characters) is 1 million, 157 thousand and 625

21 * 5 * 21 * 5 * 21 * 5 = 1,157,625

      

7 characters:

21 * 5 * 21 * 5 * 21 * 5 * 21 = 24,310,125

      



8 characters:

21 * 5 * 21 * 5 * 21 * 5 * 21 * 5 = 121,550,625

      

You get the idea.

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If its only lowercase English alpha characters, then the answer for the combination is only 26th power. I have no answer for the permutation.



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