ου particle - nominative
ou  oo: no or not -- + long, nay, neither, never, no (man), none, (can-)not, + nothing, + special, un(-worthy), when, + without, + yet but.
δυναμεθα verb - present middle or passive deponent indicative - first person
dunamai  doo'-nam-ahee: to be able or possible -- be able, can (do, + -not), could, may, might, be possible, be of power.
γαρ conjunction
gar  gar: assigning a reason (used in argument, explanation or intensification; often with other particles)
ημεις personal pronoun - first person nominative plural
hemeis  hay-mice': we (only used when emphatic) -- us, we (ourselves).
α relative pronoun - accusative plural neuter
hos  hos: the relatively (sometimes demonstrative) pronoun, who, which, what, that -- one, (an-, the) other, some, that, what, which, who(-m, -se), etc.
ειδομεν verb - second aorist active indicative - first person
eido  i'-do: to see; by implication, (in the perfect tense only) to know
και conjunction
kai  kahee: and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
ηκουσαμεν verb - aorist active indicative - first person
akouo  ak-oo'-o: to hear (in various senses) -- give (in the) audience (of), come (to the ears), (shall) hear(-er, -ken), be noised, be reported, understand.
μη particle - nominative
me  may: any but (that), forbear, God forbid, lack, lest, neither, never, no (wise in), none, nor, (can-)not, nothing, that not, un(-taken), without.
λαλειν verb - present active middle or passive deponent
laleo  lal-eh'-o: to talk, i.e. utter words -- preach, say, speak (after), talk, tell, utter.