Participant #1
Name: "A"
Email: "A@example.com"
Sender (their Secret Santa): "D"
Recipient: "C"

Participant #2
Name: "B"
Email: "B@example.com"
Sender (their Secret Santa): "C"
Recipient: "D"

Participant #3
Name: "C"
Email: "C@example.com"
Sender (their Secret Santa): "A"
Recipient: "B"

Participant #4
Name: "D"
Email: "D@example.com"
Sender (their Secret Santa): "B"
Recipient: "A"