  Following the definition of a root basis of an affine root system, we define
a base of the root system of an affine Lie superalgebra to be a linearly
independent subset $B$ of its root system such that each root can be written as
a linear combination of elements of $B$ with integral coefficients such that
all coefficients are nonnegative or all coefficients are nonpositive.
Characterization and classification of bases of root systems of affine Lie
algebras are known in the literature; in fact, up to $\pm 1$-multiple, each
base of an affine root system is conjugate with the standard base under the
Weyl group action. In the super case, the existence of those self-orthogonal
roots which are not orthogonal to at least one other root, makes the situation
more complicated. In this work, we give a complete characterization of bases of
a twisted affine root supersystem. We precisely describe and classify them.
