Also misspelled words might work. I used to be on fakebook & in natural medicine groups. I saw a post asking about CBD brands. They said, C*D I don’t know if it was group or Facebook that might block that. I know groups can enter keywords and those comments are automatically deleted. On Instagram I’m seeing a lot of abbreviations, emojis & on in pic post they mark out censored words. I’m thinking all S.M. has keywords they automatically block. They can’t have enough staff to monitor as much as I’m seeing.