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modal verbs - The difference between "can be" and "may be"?
CAN, COULD, BE ABLE TO | Learn English
Modal Verbs: Definition & Usage Examples | Grammarly Blog
Can Be | Definition & Meaning - Merriam-Webster
sentence meaning - Correct usage of " Can be " - English …
'Can be' or 'could be' - English Language Learners Stack Exchange
can - Oxford Learner's Dictionaries
Could vs. Can—What’s the Difference? - LanguageTool
'can' and 'could' | LearnEnglish - LearnEnglish - British Council
The verb 'be' | LearnEnglish - British Council