YOU SAID:
shelly sold sea shells by the sea shore
INTO JAPANESE
貝殻は海岸で貝殻を売った
BACK INTO ENGLISH
Seashells sold seashells on the beach
INTO JAPANESE
貝殻は浜辺で貝殻を売った
BACK INTO ENGLISH
Seashells sold on the beach
INTO JAPANESE
ビーチで売られている貝殻
BACK INTO ENGLISH
Seashells sold on the beach
That didn't even make that much sense in English.