Use the lower groupsign for "ea", "bb", "cc", "ff" or "gg" at the end of a word when a suffix is added to the word or when it is the first word in an unhyphenated compound word.

Generally, use a groupsign which bridges a diphthong and an adjoining letter unless the diphthong is printed as a ligature.

Preferably, when it is known, or can be determined from the text or by reference to a standard dictionary, that letters within an abbreviation or acronym that would make up a contraction are pronounced separately as letters, do not use the contraction. In case of doubt, use the contraction.

 It is recognized that these guidelines relating to unknown pronunciation and syllabification may result in a particular word being contracted differently from one transcription to another.

 For lisped words, follow the basic contraction rules of Sections 10.1 to 10.11.

When punctuation, an indicator or a terminator occurs within a word, follow print and follow the basic contraction rules of Sections 10.1 to 10.11.

For a word with omitted letters, follow print and follow the rules of Section 5, Grade 1 Mode, and the basic contraction rules of Sections 10.1 to 10.11.

 For a word which shows speech hesitation, slurring or a vocal sound, follow the basic contraction rules of Sections 10.1 to 10.11.

For a word which is spelled, follow print and follow the rules of Section 5, Grade 1 Mode, and Section 8, Capitalisation.

 For a word which is stammered, follow print and the rules of Section 5, Grade 1 Mode, and the contraction rules of Sections 10.1 to 10.11.