"Always the same card?"
"Yes."
"And you have never met! And never written!"
"No. Why should we?"
Dorothea was silent for a moment. Then she said, "If you met, you would be friends again."
The Colonel made a dubious sound.
"Was it you who sent the card first, or was it he?"
"Not I."
"And when you first got it, did you wait a whole year to send it back?"
"Certainly."