Please add the language code crl to the list of language codes supported for monolingual text values.

The language name is ᐄᔨᔨᐅᔨᒧᐧᐃᓐ (iiyiyiuyimuwin) in the language and East Cree in English if I check this https://www.eastcree.org/cree/en/dictionary/

https://www.wikidata.org/wiki/Q282011

They use the canadian Aboriginal syllabics

The language is used by the cree people in Quebec.

I note they are two codes for East Cree (crj ans crl), but the https://www.atlas-ling.ca/ seem to consider them as a unique language. they use the same syllabic convertor https://syllabics.atlas-ling.ca/ The dictionnary is divided by the two dialect https://dictionary.eastcree.org/words, but they use the same site at the difference of the other algonquian language dictionnaries. If I look http://www.endangeredlanguages.com/lang/2165, the distinction between the two seem the varies by your sources.

Usage example:
This file have 99 geographical names in East Cree https://www.donneesquebec.ca/recherche/fr/dataset/noms-traditionnels-autochtones
also the Commission de toponymie have published this book http://www.toponymie.gouv.qc.ca/ct/pdf/la%20toponymie%20des%20cris.pdf?ts=0.731622204628176