Let [image omitted] be an affine Lie algebra of the type [image omitted]. Suppose we are given a -gradation of the corresponding simple finite-dimensional Lie algebra = -1 ⊕ 0 ⊕ 1; then we also have the induced -gradation of the affine Lie algebra [image omitted] Let L(Λ) be a standard module of level 1. Feigin-Stoyanovsky's type subspace W(Λ) is the [image omitted]-submodule of L(Λ) generated by the highest-weight vector vΛ, [image omitted] We find a combinatorial basis of W(Λ) given in terms of difference and initial conditions. [ABSTRACT FROM AUTHOR]
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