first you have to check whether there is three capital words are there 
or two..

if str.match(/([A-Z]+[a-zA-Z]* [A-Z]+[a-zA-Z]* [A-Z]+[a-zA-Z]*)/)
  # Do something

elsif str.match/([A-Z]+[a-zA-Z]* [A-Z]+[a-zA-Z]*)/

  # Do something
end

I  hope this will help u..


Thanks

Brijesh Shah
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