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