It is knitted from the back side of the knit and 1 row is reversed on the front of the knit. 1 yarn is taken towards us, 1 stitch is taken.

The thread is wrapped 1 time without removing the thread from the skewer.

It is exited by sinking into the same loop again, that is, 1 loop is turned into 3 loops.

In other words, 1 loop is turned into 3 loops.

The 3 loops next to it are gathered together and cut.

When forming 3 loops from 1 loop, we cut 3 loops and get the same number.

Here is our finished example.