And so but are what parts of speech?

The phrase "so but are" doesn't make grammatical sense in English. It's likely a typo or a misphrased sentence.

To determine the parts of speech, we need a correctly formed phrase or sentence. For example, let's look at:

"So, but are you coming?"

* So: In this case, "so" is an adverb. It modifies the following verb phrase "are you coming."

* But: This is a coordinating conjunction, connecting the phrase "so" to the rest of the sentence.

* Are: This is a helping verb that forms part of the verb phrase "are you coming."

* You: This is a pronoun serving as the subject of the sentence.

* Coming: This is the main verb in the verb phrase "are you coming."

Let me know if you have another phrase or sentence you'd like to analyze!