-bas

(basement,basic, bass)

-cap,capt-

(capture,capable,

captive)

-cred-

(credible,credibility,)

-dict-

(predict,dictionary,

dictates)

-duc,duct-

(induce,conduct,

deduct)

-fad,fact-

(artifact,facsimile,

fade)

-graph-

(autograph,graphic,

bargraph)

-log-

(dialog,biology,)

-mort-

(mortal,mortician,

mortar)

-scrib,script

(transcribe,subscribtion

prescription)

-spec,spect-

(specimen,aspect,

spectate)

-tact-

(contact,tactile)

-ten-

(tenacious,retentive,

pretentive)

-therm-

(thermostat,

thermometer)

-ver-

(verify,verification)