I had to add a 5th line to a cics with 2 ci cards already in the system we took over. In programming the first extension, line acces, show line would start at line one then do next it went line 001,002,003,004,005,031,032,033,034, on
ext 222 it would be 001,002,003,004,005,006,031,032,033,034...