Hello all!
Often when a word is preceded by the prepositions "с" and "в" (and sometimes also other prepositions like "от", "над", etc), it's possible to add an "о" to the preposition to make the pronunciation easier:
в всяком случае --> во всяком случае
над мной --> надо мной
My question is: when is this allowed? Is there a general rule? Are there set phrases? Or just any time you feel like the consonants are really stepping on each others' toes?
I mean, I can say things like "с встречей", but if an "о" was allowed, I'd really appreciate it!
Thanks in advance.