/&/ versus /U/: 56 pairs

baccy bookie
back book
backed booked
backing booking
backings bookings
backs books
bally bully
bashes bushes
bract brooked
cad could
camel k"ummel
carrier courier
carriers couriers
cracked crooked
cracking crooking
cracks crooks
crack crook 
fat foot
fats foots
fatted footed
fatter footer
fatting footing
gad good
gads goods
hack hook
hacked hooked
hacking hooking
hacks hooks
had hood
knack nook
knacks nooks
lack look
lacked looked
lacking looking
lacks looks
lacquer looker
lacquers lookers
pad pud
padding pudding
pal pull
palette pullet
palettes pullets
palled pulled
palling pulling
pally pulley
pals pulls
Pat put
patches putsches
pats puts
rack rook
racked rooked
racking rooking
racks rooks
shack shook
shad should
tack took