We previously had decided that we would go by car.
We had previously decided that we would go by car.
She previously was employed as a tour guide.
She was previously employed as a tour guide.
Previously normally goes in mid position:
- After the verb be: ‘She was previously employed as a tour guide.’
- After the first auxiliary verb: ‘We had previously decided to go by car.’
Previously can also go at the beginning or end of a sentence: ‘Previously, she worked as a tour guide.’ ‘I had met her previously.’