ALPHA, BETA, gamma, delta. The next letters on the list, if it comes to it, which it probably will, are epsilon, zeta, eta and theta. Dig deeperAll our stories relating to the pandemic and the vaccines can be found on our coronavirus hub. You can also listen to The Jab, our podcast on the race between injections and infections, and find trackers showing the global roll-out of vaccines, excess deaths by country and the viruss spread across Europe and America. They will now be given the letters Alpha, Beta, Gamma, and Delta respectively, to reflect their order of detection, with any new variants following the pattern down the Greek alphabet.
epsilon is the last letter of the alphabet.
( z0 letter :domain ( z1 epsilon ) :ord ( z2 ordinal-entity :value -1 ) :part-of ( z3 alphabet ) )
(z0 / letter
    :domain (z1 / epsilon)
    :ord (z2 / ordinal-entity
             :value -1)
    :part-of (z3 / alphabet))
epsilon is the last letter of the alphabet .
z2 :value 0
z0 :ord z2
z0 :domain z1
z0 :part-of z3