Which analyzer?

[Neils]

Hi folks,
 
i have tried around with some analyzer, but didn't found a solution for my
problem. 
 
I have a text wich looks like this: "24 hours t. b. a." 
 
StandardAnalyzer index: "24 hours b"
SimpleAnalyzer index: "hours t b a"
 
When i want to search with "24 tba" ( or "24 t b a") i got no results, cause
no analyzer matches my
requirements. Did i miss some analyzer which can handle this or is writing
my own analyzer the only
solution?
 
--Thanks--