wagon, when, within
an on in are all 2 letter words ending in N.
Some seven letter words ending in N are:BritainbullioncautioncurtaindrunkendungeonemotionenvironerosionfashionfissiongelatinLincolnkitchenmansionmentionmillionmissionovationpassionpelicanportionpuritanvenisonversion
conflagration
German
Question.
damn
patron
intoxication
Surgeon
spleen
The base word for running is run. the ending for running is ing. you double the consonant when you have it before the ending that has a vowel
Contrition