input.txt

%sf -> pz, gj
%zh -> bc, st
%hk -> bc
&bc -> mn, zl, xb, mm, dh, hv, gz
%st -> bc, mm
%gv -> xf, qq
%hv -> xb
%nd -> gj, tr
%zx -> bx, ms
%sc -> ks, gj
%gr -> hn
%pl -> qq, rh
%qc -> sf, gj
%xr -> sc, gj
%zl -> zh
&gj -> ks, ld, sg, xr
%dg -> ll, bx
%nf -> bc, tg
%lz -> cv, qq
%nq -> dg, bx
%rh -> qq, lp
%xf -> qq, qj
%ms -> bx, xh
%mn -> bc, hv
&jm -> rx
%xh -> vt, bx
%pz -> gj
%vq -> bt
%gz -> nf
%bt -> gr
&sg -> jm
%fr -> bx, tb
&lm -> jm
%ld -> cl
%cv -> vq
%cl -> gj, jf
%tr -> gj, sz
%sz -> gj, ld
%dx -> hk, bc
%lr -> bx, fr
%vt -> lr, bx
%ll -> zx
broadcaster -> pl, xr, mn, xc
%lp -> lz
%mm -> gz
&qq -> lm, gr, cv, vq, lp, pl, bt
%xb -> zl
&bx -> ll, xc, db
%tb -> bx
%hn -> gv, qq
%jf -> qc, gj
%qj -> qq
%xc -> bx, pm
%tg -> bc, dx
&dh -> jm
%ks -> nd
&db -> jm
%pm -> bx, nq