to offer
offered, offering
offerred, offerring
to transfer
transfered, transfering
transferred, transferring
to refer
refered, refering
referred, referring
to infer
inferred, inferring
infered, infering
to suffer
suffered, suffering
sufferred, sufferring
to buffer
bufferred, bufferring
buffered, buffering
to differ
differred, differring
differed, differing
to prefer
prefered, prefering
preferred, preferring
to defer
deferred, deferring
defered, defering
to confer
confered, confering
conferred, conferring
