DR sort 17 adding -ation -cation -ition
Dr sort 17 adding
DR sort 23 adding -ion vowel alternation and spelling change
Dr sort
DR sort 14 adding ion to base words
Dr sort
DR sort 51 suffixes (-ent/-ence/-ency, -ant/-ance/-ancy)
Dr sort
DR sort 50 suffixes -ence -ent -ant -ance
Dr
DR sort 16 base d or de and base te spelling changes to add ion
adding
DR sort 16 adding ion
Dr
DR sort 21 adding suffix -ity
Dr sort
DR sort 57 prefix assimilation (com-)
Dr sort
DR sort 13 verb suffixes -en -ize -ify
Dr
DR sort 15 adding -ion-ian
Dr sort
DR sort 4 prefixes sub com pro en
Dr
DR sort 19 vowel alternation
Dr