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- english: 05 – native or bilingual proficiency
- spanish: 04 – full professional working proficiency
- russian: 03 – professional working proficiency
- italian: 02 – limited working proficiency
- french: 01 – elementary proficiency
- korean: 01 – elementary proficiency
- japanese: 00 – no proficiency
- chinese: 00 – no proficiency
feb 24 2018 ∞
may 7 2022 +
may 7 2022 +