What happens if you run out of names for hurricanes? The Greek Alphabet after the W name (Wilfred for 2020)

This has happened once before, in 2005 – the first 6 letters were used.It will go to the Greek alphabet, so Alpha, Beta, Gamma, Delta, Epsilon, Zeta, Eta, Theta, Iota, Kappa, Lambda, Mu, Nu, Xi, Omicron, Pi, Rho, Sigma, Tau, Upsilon, Phi, Chi, Psi, Omega.