The Letter (Brevet). A string figure from Sweden

I learnt this relatively easy figure from Karin Netz in August 2023.
Note that this figure exactly matches a figure used in a folk healing ritual in the early 20th century at Fru Alstad, southern Sweden (though held differently):
Claassen, S. (2013) "Swedish String Figures IV. String figures used in folk medicine." Bulletin of the International String Figure Association 20:126-152, especially 143-149