before vs then

Some examples from the web:

• Temperature dropped 40 degrees Right before Pemberton was attacked.
• Just a few mornings before work.
• You saw my potential before anyone else.
• Just killing some Time before my big meeting.
• Four minutes before the Tokyo market opened.
• Projects delegate Cowan was pushing before she died.
• The hybrid before they unplugged it.
• I raised 25 bucks extra before we left.
• Your father lost several prototypes before Lore.
• We never had a psychiatrist staying here before.
• You should change before you catch pneumonia.
• Report says methane has replaced oxygen tanks an hour before take-off.
• Which he bought before abducting peter.
• Quick, drink before the wound closes.
• He died before I got there.
• Let's date everyday before you leave.
• At least we found Big Bertha before something terrible happened.
• Sometimes friends come before the mlssion.
• You get my permission before talking to Erica.
• I finished my inspection seven hours before the exhibition started.

Some examples from the web:

• Overlapping responsibilities default to federal, then to state.
• File was e-mailed and then erased.
• Have to charge her double then.
• Well then, then they've left town.
• I used conditioned response, then environmental enhancement.
• And then Friday, then Saturday.
• Shower and then nap and then warehouse.
• Korea first, then German elections, then commercial television.
• First, they restore power, then communication, then transportation.
• Tina then started jacking them. Charlie then landed one weighing 5 pounds.
• But then he began to exaggerate, and then...
• Since then sends the state aircraft around and then throwing bombs at the wrong party.
• I like how the lines just go straight and then up and then down and then straight and then up and then down.
• First it was Ben, then Ricky, then Ben, then some weird guy, then Ben, then Ricky.
• But then we had our first argument, and then another one, and then another one, and...
• You know, first her, then you, then her, then me.
• Maytag fridges: Press Options, then Water Filter, then Reset, and then Yes.
• And then she's hitting him, he's defending himself, And then she gets a knife, And then...
• So one piece led to two, then three, then five, then 17.
• First two people know, then four, then eight, then 16.