  The Monster Lie algebra $\mathfrak m$ is a quotient of the physical space of
the vertex algebra $V=V^\natural\otimes V_{1,1}$, where $V^\natural$ is the
Moonshine module vertex operator algebra of Frenkel, Lepowsky, and Meurman, and
$V_{1,1}$ is the vertex algebra corresponding to the rank 2 even unimodular
lattice $\textrm{II}_{1,1}$. We construct vertex algebra elements that project
to bases for subalgebras of $\mathfrak m$ isomorphic to $\mathfrak{gl}_{2}$,
corresponding to each imaginary simple root, denoted $(1,j)$ for $j>0$. Our
method requires the existence of pairs of primary vectors in $V^{\natural}$
satisfying some natural conditions, which we prove. We show that the action of
the Monster finite simple group $\mathbb{M}$ on the subspace of primary vectors
in $V^\natural$ induces an $\mathbb{M}$-action on the set of $\mathfrak{gl}_2$
subalgebras corresponding to a fixed imaginary simple root. We use the
generating function for dimensions of subspaces of primary vectors of
$V^\natural$ to prove that this action is non-trivial for small values of $j$.
