CeLlAr DoOr
cElLaR dOoR
cELLAR dOOR
cellar door

Cellar Door:
The most beautiful comprised set of words in the English dictionary

Why?

It could be the similar endings or how the shapes of the C and D are parallel
It could be the double letters in each word that are located right in the middle of both
Yet it could also be the way it, so easily, slides up your throat and escapes you mouth while it still ruminates on the tip of your tongue

But I personally believe it is not the letters or the sounds
It is the mystery of that one "Cellar Door"

What lies behind the "Cellar Door"?
Where does this "Cellar Door" lead to?
Can you imagine the beauty of this "Cellar Door"?

The perfection of this word is that of which the eyes cannot see and the ears cannot hear