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  1. text <- "A change to headings 0101 through 0106 from any other chapter.
  2. A change to subheadings 0712.20 through 0712.39 from any other chapter.
  3. A change to heading 0903 from any other chapter.
  4. A change to subheading 1806.20 from any other heading.
  5. A change to subheading 1207.99 from any other chapter.
  6. A change to heading 4302 from any other heading.
  7. A change to subheading 4105.10 from heading 4102 or any other chapter.
  8. A change to subheading 4105.30 from heading 4102, subheading 4105.10 or any other chapter.
  9. A change to subheading 4106.21 from subheading 4103.10 or any other chapter.
  10. A change to subheading 4106.22 from subheadings 4103.10 or 4106.21 or any other chapter.
  11. A change to tariff item 7304.41.30 from subheading 7304.49 or any other chapter."
  12. rx <- "A\\s+change\\s+to\\s+(?:(?:sub)?headings?|tariff\\s+item)\\s+\\d[0-9.]*(?:\\s+through\\s+\\d[0-9.]*)?\\s+from(?:(?:,?\\s+(?:sub)?headings?\\s+\\d[0-9.]*)+(?:\\s+or\\s+\\d[0-9.]*)*\\s+or)?\\s+any\\s+other\\s+(?:heading|chapter)\\."
  13. regmatches(text, gregexpr(rx, text))
Success #stdin #stdout 0.18s 185728KB
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[[1]]
 [1] "A change to headings 0101 through 0106 from any other chapter."                            
 [2] "A change to subheadings 0712.20 through 0712.39 from any other chapter."                   
 [3] "A change to heading 0903 from any other chapter."                                          
 [4] "A change to subheading 1806.20 from any other heading."                                    
 [5] "A change to subheading 1207.99 from any other chapter."                                    
 [6] "A change to heading 4302 from any other heading."                                          
 [7] "A change to subheading 4105.10 from heading 4102 or any other chapter."                    
 [8] "A change to subheading 4105.30 from heading 4102, subheading 4105.10 or any other chapter."
 [9] "A change to subheading 4106.21 from subheading 4103.10 or any other chapter."              
[10] "A change to subheading 4106.22 from subheadings 4103.10 or 4106.21 or any other chapter."  
[11] "A change to tariff item 7304.41.30 from subheading 7304.49 or any other chapter."
https://ideone.com/1hd09V
language:
R (R 3.5.2)
created:
6 years ago
visibility:
secret

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