A basic list is punctuated like this:
The park has some bears, deers, and other animals.
(bears) (deers) (other animals)
When commas appear inside the items of a list, or when lists appear inside other lists, I often see semi-colons used, e.g.:
The park has: some bears; many deers, which are quite friendly, like to eat camp food, and watch visitors; and other animals, most of which live in the trees.
(bears) (deers (friendly) (like to eat) (watch visitors)) (other animals (live in trees))
When semi-colons appear inside the items of a list, or when lists appear inside lists of other lists, what punctuation can be used?
(bears) (deers (friendly) (like to eat (popcorn) (marshmallows) (chips)) (watch visitors)) (other animals (live in (tall trees) (short trees))
Update:
To clarify, I am not looking for a way to reword the sentences. I am looking for a way to punctuate the lists in these situations.
