I did, but I didn't see Pisteuo in the list when I looked it up.
G571 ἄπιστος apistos adjective that believe not, unbelieving, faithless, unbeliever, infidel, thing incredible, which believe not
G1680 ἐλπίς elpis noun hope, faith
G3640 ὀλιγόπιστος oligopistos noun of little faith...