tr "yaeiouYAEIOU" "aeiouyAEIOUY" |\
tr "zbcdfghjklmnpqrstvwxZBCDFGHJKLMNPQRSTVWX" \
"bcdfghjklmnpqrstvwxzBCDFGHJKLMNPQRSTVWXZ" |\
sed \
-e 's/ry/r/g' \
-e 's/Ry/R/g' \
-e 's/RY/R/g' \
-e 's/q/qu/g' \
-e 's/Q/Qu/g'