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Dr. Seuss’s publisher once bet him that he couldn’t write a book using only 50 different words. 

He decided to prove him wrong, and ended up with Green Eggs and Ham. 

The 50 words are: 

a, 

am, 

and, 

anywhere, 

are,

be, 

boat, 

box, 

car, 

could, 

dark, 

do, 

eat, 

eggs, 

fox, 

goat,

good, 

green, 

ham, 

here, 

house, 

I, 

if, 

in, 

let, 

like, 

may, 

me, 

mouse, 

not, 

on, 

or, 

rain, 

Sam, 

say, 

see, 

so, 

thank,

that, 

the, 

them, 

there, 

they, 

train, 

tree, 

try, 

will, 

with, 

would, 

and you.

(Source)

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