The pattern is very easy - only two rows are repeated. It gives a reversible scarf which can be done in yarn of any weight.
Very enjoyable knit!

The idea behind the scarf comes from Betty.

But I changed the way of decreases and increases to get a nicer edging. And I have the beginning and the end of the scarf symmetrical as well - in Betty’s version you get a different beginning and ending of the scarf.