-bas-

(Basement, basic)

Low

-cap-, -capt-

(capable, capture, captivate)

take, seize

-cred-

(credible, credit)

Believe

-dict-

(dictate, predict)

Speak

-duc-,-duct-

(induce, conduct)

Lead

-fac-,-fact-

(factor, artifact, facsimile)

make, do

-graph-

(autograph, graphic, biography)

write 

-log-

(Dialogue, biology, geology)

Word, study of

-mort-

(mortal, mortician, immortality)

die, death

-scrib-, -script-

(transcribe, subscription, subscribers)

write

-spect-,-spec-

(specimen, aspect, spectator)

see

-tact-

(tactile, tactic,contact)

touch

-ten-

(tenacious, retentive, attentive) 

hold

-therm-

(thermostat, thermosphere, thermometer)

heat

-ver-

(verify, very)

true