bas-

basement, bass

cap,capt

Capsize,Captain,capable 

cred-

credible, credit, credence

dict-

dictionary, predict, diction, addiction

fact-

faction, factor, artifact, facsimile

duc, duct

induce conduct, conductor

graph

autograph, graphic, photograph

Log

dialog, biology, logic 

Mort-

mortal, mortician, mortify

Scrib, script

Transcribe, subscription, subscribe

Spec, spect

Specimen, aspect, spectral

tact

contact, tactile, tactic

ten

tenacious, retentive, content

therm

thermostat, thermometer, thermo-insulation

Ver

verify, version, very