  We introduce the COMBO-based approach for EUD parsing and its implementation,
which took part in the IWPT 2021 EUD shared task. The goal of this task is to
parse raw texts in 17 languages into Enhanced Universal Dependencies (EUD). The
proposed approach uses COMBO to predict UD trees and EUD graphs. These
structures are then merged into the final EUD graphs. Some EUD edge labels are
extended with case information using a single language-independent expansion
rule. In the official evaluation, the solution ranked fourth, achieving an
average ELAS of 83.79%. The source code is available at
https://gitlab.clarin-pl.eu/syntactic-tools/combo.
