  We conduct a systematic investigation of the microlensing data collected
during the previous observation seasons for the purpose of reanalyzing
anomalous lensing events with no suggested plausible models. We find that two
anomalous lensing events OGLE-2018-BLG-0584 and KMT-2018-BLG-2119 cannot be
explained with the usual models based on either a binary-lens single-source
(2L1S) or a single-lens binary-source (1L2S) interpretation. We test the
feasibility of explaining the light curves with more sophisticated models by
adding an extra lens (3L1S model) or a source (2L2S model) component to the
2L1S lens-system configuration. We find that a 2L2S interpretation well
explains the light curves of both events, for each of which there are a pair of
solutions resulting from the close and wide degeneracy. For the event
OGLE-2018-BLG-0584, the source is a binary composed of two K-type stars, and
the lens is a binary composed of two M dwarfs. For KMT-2018-BLG-2119, the
source is a binary composed of two dwarfs of G and K spectral types, and the
lens is a binary composed of a low-mass M dwarf and a brown dwarf.
