Only the block \(B\ \underline{E}\ 8\) fits "consonant-vowel-number". Hence \(\boxed{1}\).
Rather than spotting the qualifying block directly, let's scan every vowel in the arrangement and check its immediate neighbours one at a time, then see which option matches the tally.
The vowel-by-vowel scan turns up exactly one qualifying case.
Hence, the correct answer is One.
