To get you started, I found only three examples of {-lu’be’} by Okrand:

   SuvwI'pu' qan tu'lu'be'

   There are no old warriors. TKW

   nge'wI' rurQo' bangna'; SIHlu'be'chu'.
     parmaq choH pagh teHqu', choH tu'DI' lajDaj.
  Love is not love which alters when it alteration finds
or bends with the remover to remove

 [“A real lover refuses to be like a remover; (s)he is completely
      unbent.”]  (Shakespeare, Sonnet 116)

   'Iw HIq yap tu'lu'be'

   Sufficient bloodwine does not exist (qep'a' 2014 Secrecy Proverb)  

and one by our Klingon Teacher from Germany’s “Discovery” Netflix announcement:

   reH muchmey chu’laH, mevlaH, ’ej chu’qa’laH lo’wI’. 
     malja’ qeSmey, latlh nuQbogh lenmey tu’lu’be’.
   Members can play, pause and resume watching, all without commercials
     or commitments.  (Lieven: DSC Netflix)

--Voragh

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From: nIqolay Q

I'm not sure if {-lu'be'} on its own has a well-defined meaning. (One of these days, if I get the opportunity, I'd like to ask about whether {-be'} can be used with various suffixes like {-lu'} and the aspect suffixes, and what those constructions would mean.)

On Fri, Jan 12, 2018 at 9:41 AM, Steven Boozer <sboozer@uchicago.edu> wrote:

The only two examples of {tu'be'lu'} I'm aware of are:

  QuvlIjDaq yIH tu'be'lu'jaj
  May your coordinates be free of tribbles! (PK)

  vaSvamDaq tuq veng je quvvaD Heghqangbogh SuvwI' tu'be'lu''a'
  Is there nobody in this hall prepared to die for the honor of your tribe and city? (PB)

{tu'lu'be'} is used in all the other examples (and there are many).

--Voragh