It’s time for Block U
which is a simple log block
It’s cut with 4 each grey and black of #8 rectangle
sew 4 sets of each together like this
and then sew the block together like this with the black on the “inside”
The block should measure 6 1/2″ or 8 1/2″ or 12 1/2″ square depending on which version you are making.
You can buy the pattern here