A villanelle defination:

Villanelle Template

A1
b
A2

a
b
A1

a
b
A2

a
b
A1

a
b
A2

a
b
A1
A2

A villanelle has 19 lines; these 19 lines are arranged in 5 verses of 3 lines and a 6^th verse of 4 lines. The rhyme pattern is indicated in the chart above.

A villanelle has two rhymes: all the a lines rhyme; all the b lines rhyme.

A1 and A2 lines are repeated word for word or with incremental variation.