we just retrieve vs we just retrieved

Some examples from the web:

• Then later we just retrieve it at our convenience.
• Then later we just retrieve it at our convenience.
• You know, a homicide detective isn't a hunting dog that just retrieves.
• Just retrieve it and hang onto it until we need it.
• Let us just retrieve the great speeches our Heads of State or Government delivered after 11 September, and let us see how much was put into practice.
• Let me just retrieve the briefcase.
• Now, of course, I'm not offering you y'all $500 just to retrieve a boat.
• I just want to retrieve Kevin before he gets in more trouble than violating his parole.
• I just won't retrieve it for you.
• No, actually I'm just here to retrieve a piece of Roman glass.
• I just need to retrieve my cell phone.
• Did I give up when that squirrel I trained to retrieve you just ran away?
• We just - we just - we just want her back home.
• We just had manicures together recently.
• We just need an inside man.
• I think we just went national.
• We just want to know what happened.
• We just wanted to leave the battlefield quickly.
• We just proved sam's the murderer.
• And we just walk away from it.

Some examples from the web:

• Can't we just focus on transplanting the heart we just retrieved?
• I just retrieved it out of one of the players.
• I had just retrieved my weapon when you arrived on the scene.
• They just retrieved his software from the explosion.
• Marie just retrieved a briefcase from a long-term locker.
• Or maybe I sent you a text earlier, and you just retrieved it then.
• I just retrieved it from my safe deposit box.
• Or maybe I sent you a text earlier, and you just retrieved it then.
• We just - we just - we just want her back home.
• We just had manicures together recently.
• We just need an inside man.
• I think we just went national.
• We just want to know what happened.
• We just wanted to leave the battlefield quickly.
• We just proved sam's the murderer.
• And we just walk away from it.
• We just heard Commissioner Wallström describe the necessity for improving air quality.
• Sorry lady, we just closed.
• We just acquire information and disseminate it.
• We just finished reading Death of a Salesman.