What is the correct format for a single command that would combine portions of 2 different lines in the command history? I'm using a C shell. Here's a simplified command history to clarify:

4 rm file1
5 ls -ld file2 file3 file4
6 cat file 5

With the above history, what would be the command to remove the files called file3 and file 5 using only history references and word identifiers? Here is what I was trying:

!4 5:2 6:1

...didn't work. I'm getting frustrated with having to repeatedly enter long pathnames, etc.

Thanks in advance for any help,
-Dbyte