Adverbials positions

What position can each adverbial take in these sentences?

• Extremely I found it difficult.

• I extremely found it difficult.

• I found it extremely difficult.

• I found it difficult extremely

What position can each adverbial take in these sentences?

• Often I found it difficult.

• I often found it difficult.

• I found it often difficult.

• I found it difficult often.

What position can each adverbial take in these sentences?

• Frequently, I made silly mistakes.

• I frequently make silly mistakes.

• I made silly mistakes frequently.

• I made frequently silly mistakes.

What position can each adverbial take in these sentences?

• All the time I made silly mistakes.

• I all the time made silly mistakes.

• I made silly mistakes all the time.

• I made all the time silly mistakes.

What position can each adverbial take in these sentences?

• Slowly I would like native speakers to speak to me.

• I slowly would like native speakers to speak to me.

• I would like native speakers to speak to me slowly.

• I would like slowly native speakers to speak to me.

What position can each adverbial take in these sentences?

• Naturally, I'm quite envious of friends who can already speak the language.

• I'm naturally quite envious of friends who can already speak the language.

• I'm quite envious of friends who can already speak the language naturally.

• I'm quite naturally envious of friends who can already speak the language.