I = we
me = us
he = they
she = they
them = them
myself = ourselves
yourself = yourselves
itself = themselves
herself = themselves
himself = themselves
themself = themselves
is = are
am = are
was = were
has = have
this = these
that = those
echo = echoes
dingo = dingoes
volcano = volcanoes
tornado = tornadoes
torpedo = torpedoes
genus = genera
viscus = viscera
stigma = stigmata
stoma = stomata
dogma = dogmata
lemma = lemmata
schema = schemata
anathema = anathemata
ox = oxen
axe = axes
die = dice
yes = yeses
foot = feet
eave = eaves
goose = geese
tooth = teeth
quiz = quizzes
human = humans
proof = proofs
carve = carves
valve = valves
looey = looies
thief = thieves
groove = grooves
pickaxe = pickaxes
passerby = passersby