They are in 5-letter groups and not cut-number CW (which would be a shorthand for numbers, i.e A=1, U=2, V=3).
I copied some of it as: "MPWMK JNVSF QJOPK EAOZK" and so on.
While typing this reply, this station stopped the letters sequence, sent "NR 50A NR 50A" which I interpret as "number 50 A", then commenced with additional 5-letter groups.
559 in Florida.