Add Portuguese wordlist

bip-0039/bip-0039-wordlists.md

@@ -8,6 +8,7 @@
 * [Chinese (Traditional)](chinese_traditional.txt)
 * [French](french.txt)
 * [Italian](italian.txt)
+* [Portuguese](portuguese.txt)
 * [Czech](czech.txt)
 
 ## Wordlists (Special Considerations)
@@ -84,6 +85,21 @@ Rules 11 and 12 prevent the selection words that are not different enough. This
 
 All the words have been manually selected and automatically checked against the rules.
 
+### Portuguese
+
+Credits: @brenorb (Breno Brito brenorb@gmail.com)
+
+1. Length between 4 and 8 characters.
+2. Words can be uniquely determined typing the first 4 characters.
+3. No accents or special characters.
+4. No complex verb forms.
+5. No plural words, unless there's no singular form.
+6. No words with common double spelling, except when the only change is the accent.
+7. No words with the exact sound of another word with different spelling.
+8. No offensive words.
+9. No words already used in other language mnemonic sets.
+10. The words which have not the same spelling in Brazil and in Portugal are excluded.
+
 ### Czech
 
 Credits: @zizelevak (Jan Lansky zizelevak@gmail.com)
@@ -98,3 +114,4 @@ Words chosen using the following rules:
 6.  No very similar words with 1 letter of difference.
 7. Words are sorting according English alphabet (Czech sorting has difference in "ch").
 8.  No words already used in other language mnemonic sets (english, italian, french, spanish). Letters with diacritical marks from these sets are counted as analogous  letters without diacritical marks.
+