People write "double sestinas" and "double sonnets" ... why not "double 12-character poems?"

This is an interesting constraint. Here are my first three attempts.

A summary of a great literary work:

2b^~2bIquery

e.e. cummings-style:

li( sigh)fe

And one that might be called "Six characters in search of a poet."

y?P?e?R?o?T?