The trigger words were:
- Desire
- Rusted
- Seventeen
- Dawn
- Stove
- Nine
- Kind-hearted
- Homecoming
- One
- Freight car
No exact explanation has been given what the words actually reference, but hypnosis typically involves words and phrases in sequences that are unlikely to be randomly said in order.
That said, the "homecoming" is likely an out-of-universe nod to Spider-Man: Homecoming. Additionally, Bucky fell from a freight car when he was lost and presumed dead. Finally, Bucky was born in 1917 (one, nine, seventeen)
