Typing too fast is often the cause of spellimg mistakes and one day Abracadabra was typed as a b a c a d a b a and right away a poetry form appeared. As can be seen its simply a progression around the first line and with lines 2 and 8 rhyming with each other also. Here is an example.
Shalt not thy deprave the spell of love
enchanted words that melts the heart
that cast thy spells deep within thereof
within a mystical aura of spiritual magic
that only lovers become reminiscent of
powers of the occult shall be of sorcery
percieved from insight of spirits above
inspiration within shall not ever depart
when a bewitched spell is as worthy of
Pasted from http://www.thepoetsgarret.com/2014Challenge/form11.html
My thanks to Divena Collins of thepoetsgarret.