Did Greek ever have long initial consonants?

1. How is Ancient Greek different from modern Greek phonology?
2. What are the letter consonants in Greek?

How is Ancient Greek different from modern Greek phonology?

Attic Greek had about 15 consonant phonemes: nine stop consonants, two fricatives, and four or six sonorants. Modern Greek has about the same number of consonants. The main difference between the two is that Modern Greek has voiced and voiceless fricatives that developed from Ancient Greek voiced and aspirated stops.

What are the letter consonants in Greek?

The 24 letters of the Greek alphabet are divided into two parts. The vowels (φωνηεντα) and the consonants (συμφωνα). Vowels (Φωνηεντα): α, ε, η, ι, υ, ο, ω. Consonants (Συμφωνα): β, γ, δ, ζ, θ, κ, λ, μ, ν, ξ, π, ρ, σ, τ, φ, χ, ψ.