Description

If possible, please provide a brief description of what is wrong with this exercise. Does not accept "ci so" as correct answer.

Diagnostics information (do not remove)

Exercise identifier: [courseId=grammar-intro_eng][lessonNumber=22][exerciseId=3355]
Exercise payload: {"shouldDisplayHint":false,"exercise":{"canonicalAnswer":"ciso","sentences":[],"title":"Number to text: 39","type":"typing"}}
Attempted solution: {"text":"ci so"}
Attempted solution was classified as correct: no
Validation payload: {"canonicalAnswer":"ciso","correct":false}