pattern

Pure guesswork!

Yeah pure guesswork, but for the completionists:

-line from top left corner to bottom right.
-3 block long parallel line above it
-2 block long parallel line below.

Don't know how but did it.

Only done with Quasivulpes hint. Had tried a number of combinations before, without successes.

Guesswork, but got it.

Il est difficile ...