match two lines with different amounts of output

I have a problem where the two lines of this module output are not the same.  How can I put in essentially null place holders so that they resultant patterns are the "same"?

example output
Notice that module 2 does not have Fw or Sw.

Mod MAC addresses                    Hw  Fw           Sw               Status
 1 a03d.6f81.0740 to a03d.6f81.074f 1.1 15.0(1r)SG12 03.07.03.E       Ok       
 2 b0aa.777d.d010 to b0aa.777d.d017 1.0                               Ok    

I was trying to use these two patterns and tried to put in placeholds of Fw and Sw at the end of "pattern03".  But the NQE does not like this.

pattern02 =
  ```
Mod MAC addresses
  {modNum:number} {string} to {string} {hwVer:string} {fwVer:string} {swVer:string} {modStatus:string}
```;

pattern03 =
  ```
Mod MAC addresses
  {modNum:number} {string} to {string} {hwVer:string} {modStatus:string} {fwVer: null:string} {swVer: null:string}
```;

getMacAddrList(parsedOutput) =
  foreach pattern in [pattern02, pattern03]
  foreach match in blockMatches(parsedOutput, pattern)
  select match;