Select the search criterion or criteria (only one or two):

Linguistic level Category Mother tongue Target modification Type of error Proficiency level (CEFR)

Examples of search:
-Target modification (e.g. wrong order)	-Category (e.g. noun)
-Type of error (e.g. gender)	-Category and target modification (e.g. missing article)
-Mother tongue and type of error (e.g. conjugation errors in French learners)	-Mother tongue and category (e.g. errors of article in Chinese learners)
-Category and target modification (e.g. missing article)	-Mother tongue and linguistic level (e.g. lexical errors in Japanese learners)
-Learner's level (CEFR)	-Linguistic level and target modification (e.g. lexical errors due to misformation)