  We define a level for a large class of Lorentzian Kac-Moody algebras. Using
this we find the representation content of very extended $A_{D-3}$ and $E_8$
(i.e. $E_{11}$) at low levels in terms of $A_{D-1}$ and $A_{10}$
representations respectively. The results are consistent with the conjectured
very extended $A_8$ and $E_{11}$ symmetries of gravity and maximal supergravity
theories given respectively in hep-th/0104081 and hep-th/0107209. We explain
how these results provided further evidence for these conjectures.
