cly

Jerry had dug up cly's coffin and knew that it was empty

Jerry Cruncher knew that Roger Cly was still alive because he overheard Cly's associates planning to fake his death to escape punishment. Later, he discovered Cly's body in the coffin being used to transport him out of the country, confirming his suspicion.

John Barsad told Carton that Roger Cly had been murdered and buried under the alias of Barsad's brother Solomon Pross. Cly had agreed to fake his death in order to frame Darnay for treason and secure his own safety and wealth.

The phrase "cly 1 2 3" is not clear. Where would it be used - please explain and resubmit your question.