/A/ versus /oI/: 37 pairs

baa boy
baa'd buoyed
baaing buoying
baas boys
calf coif
Cali coyly
Carl coil
carnage coinage
cart quoit
carts quoits
fa Fowey 
fast foist
fasted foisted
fasting foisting
fasts foists
garter goitre
garters goitres
harden hoyden
hardens hoydens
jarred joyed
jars joys
khan coign
khans coigns 
lards Lloyd's 
Larne loin
larns loins
marl moil
mast moist
parrs poise
parsed poised
parses poises
parsing poising
rah Roy 
ta toy
tarred toyed
tars toys
vast voiced