[Grammar] adverb position around verbs (usually do not / do not usually)

[wld8db8]

In this webpage English Grammar - Adverbs - Position in a Sentence - Word Power, they say:

In negative statements, and negative questions with not, adverbs in the middle position of a clause usually follow the word not.
e.g. Negative Statement: They do not often miss the bus.

And then they use the adverb "usually" before "do not":

It should be noted that the adverbs daily, weekly, monthly, yearly and annually usually do not occupy the middle position of a clause.

I'm confused.

1. do not often / do not usually
2. often do not / usually do not

Are 1 and 2 both OK?

Or is it that "do not usually" and "usually do not" have different meanings?

[engee30]

Originally Posted by wld8db8

In this webpage English Grammar - Adverbs - Position in a Sentence - Word Power, they say:

And then they use the adverb "usually" before "do not":
I'm confused.

1. do not often / do not usually
2. often do not / usually do not

Are 1 and 2 both OK?

Or is it that "do not usually" and "usually do not" have different meanings?

You're another person on this forum asking the same question and me answering to such - the difference is that adverb + not is stronger, more emphatic than not + adverb.