oo / s / p / n
spoon
oo / b / t
boot
oa / s / p
soap
ee / r / t
tree
oo / m / n
moon
or / f/ k
fork
or / s / t / m
storm
oo / k / b
book
oa / t / g
goat
ee / b
bee
or / c / n
corn
oa / b/ t
boat