ag
agent,agitate,agenda,agile
ann
annual,anniversary,annex
aster
asteria,asterion,asterisk,asterism,asterismal,asteroid
astro
astronomy,astroid,astrology,astronomical,astronaut
andi (应该是anti吧)
anticipate,antibody,antibiotic,antidote
bell
belligerent,bellicose,bellicism
ceed
proceed,exceed,succeed
cess
excess,process,success
cred
credibility,credit,credential,credulous
cruc
crucial,crucify,crucifix
dict
diction,dictionary,dictate,dictator
predict,verdict,addict,contradict
duc
introduce,produce,induce,seduce
duct
conduct,induct,product,abduct
introduction,production,abduction
fact
factor,factitious,factorial
fac
facet,facial,faculty,face
army )
graph
paragraph,autograph,photograph