“erf/urf” sound
-FRB
surf
SUFRB
turf
TUFRB
wharf
WHAFRB
arf
AFRB
barf
PWAFRB
dwarf
TKWAFRB
nerf
TPHEFRB
scarf
SKAFRB
serf
SEFRB
“erv/urve” sound
add asterisk to FRB to get -*FRB
carve
KA*FRB
conserve
K*EFRB
curve
K*UFRB
deserve
STK*EFRB
nerve
TPH*EFRB
observe
OEB
preserve
PR*EFRB
nervous
TPH*FS
final side “rch” sound /porch
-FRPB
final “nch” sound /lunch
-FRPBLG
porch
POFRPB
torch
TOFRPB
church
KHUFRPB