The next letters on the list, if it comes to it, which it probably will, are epsilon, zeta, eta and theta. (B.1.1.7s new name is Alpha.) Currently, there are no plans on how to label the variants after the 24 letters of the Greek alphabet are used up. These old names are not abandoned. ALPHA, BETA, gamma, delta.
The next letters are islanded are showed promising in our screens.
( z0 show :ARG1 ( z1 promise :ARG0 ( z2 letter :mod ( z3 next ) ) ) :location ( z4 island :domain z2 ) :location ( z5 screen :poss ( z6 we ) ) )
(z0 / show-01
    :ARG1 (z1 / promise-01
              :ARG0 (z2 / letter
                        :mod (z3 / next)))
    :location (z4 / island
                  :domain z2)
    :location (z5 / screen
                  :poss (z6 / we)))
The next letters are islanded are showed promising in our screens .
z2 :mod z3
z4 :domain z2
z0 :location z4
z0 :ARG1 z1
z1 :ARG0 z2
z5 :poss z6
z0 :location z5