Can thoughts exist without words(code)?

For the most part, the "audio" stream of what I would consider my consciousness reads as words. Excluding the visual stream, I usually hear a voice in my head (usually Peter Griffin) orating whatever bs is going on in my thoughts at the time.

Question: What did our consciousness "talk" like before we had a firm grasp of a spoken language?

For example:

Can an infant that hasn't learned a language yet talk to his/herself?

If so, how would that stream of information be "tokenized"?

If you can tokenize this stream, and if higher level languages (like English) can presumably be built on top of it, does that make this the "assembly" language common to all spoken languages?

[P.S. No clue how we would know, just fun to think about :) ]