All of the /shun/ suffixes, including -tion, -cian, -sion and -ssion

The most common spelling of the /shun/ suffix is -tion and these words often have a root word ending in ‘t’ or ‘te’. Words spelt with -sion often have a root word ending in ‘d’, ‘de’ or ‘se’ and can sound like /zhun/. Words spelt with -ssion often have a root word ending in ‘ss’ or ‘mit’. Words spelt with -cian often have a root word ending in ‘c’ or ‘cs’ and are used for professions. How to spell the curriculum words: potatoes, minute and breath.