Some thin Lie algebras related to Albert-Frank algebras and algebras of maximal class

We investigate a class of infinite-dimensional modular, graded Lie algebra in which the homogeneous components have dimension at most two. A subclass of these algebras can be obtained via a twisted loop algebra construction f rom certain finite-dimensional, simple Lie algebras of Albert-Frank type. Another subclass of these algebras is strictly related to certain graded Li e algebras of maximal class, and exhibits a wide range of behaviours.