What are words that have three sets of double letters?

bookkeeper

hookkeeper

addressee

committee

keenness

yellowwood

Chattahoochee

Mississippi

Tallahassee

Tennessee

aggressiveness

barrenness

cheerlessness

greenness

heedlessness

keenness

noncommittally

possessiveness

rottenness

sleeplessness

stubbornness

successfully

suddenness

sullenness

unsuccessfully

whippoorwill

woodenness

woolliness