These twin consonants are blended together to make one sound:/s/, /s/, /s/, grass.

The breve before reminds us that a vowel before twin consonants will make its short, closed sound.

For markup, draw a line under the twin consonants and a breve over the vowel before: /s/, /s/, /s/, grass

Closed, one-syllable words that do not use twin consonants SS are bus, gas, and us.

Many multi syllable words have twin consonants SS.

Most mutisyllable words that end with twin consonants SS use the suffixes -ESS, -NESS, or -LESS.