Publication 28 - Postal Addressing Standards > 3 Business Addressing Standards > 35 Address Data Element Compression Guidelines > 359 Other Considerations
Substitute short endings on words.
If the last word of an address line is any of those listed below, first replace the word with the standard abbreviation. If additional compression is still required, remove the word or its standard abbreviation.
Note: This step can be applied only to address lines #6, 7, 8, and 9.
It is recommended that vowels not be removed if the desired address data element compression can be obtained by first using standard word abbreviations.
From the right side of the address line, beginning with the rightmost word, remove vowels as necessary on a word–by–word basis to achieve desired compression. Leave the last vowel; if the first character of a word is a vowel, do not remove that character. It is also recommended that the vowels not be removed from the leftmost words.