Hello,
Thank you for sharing your situation and question with us.
According to the CIC Website in the Acceptable language proof to apply for citizenship wizard section.
For further clarification and a definitive answer, you may want to contact the Citizenship and Immigration Canada (CIC) Call Centre directly.
I hope this information is helpful. Please let us know if you have further questions and if there is any follow up to your question/situation.
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Anna
Settlement.Org Content and Information/Referral Specialist, CIRS
Settlement.Org