(( Bracelets )) Inka bracelet

At first, sorry for my English (I?m from Czech republic and this is my first tutorial). I didn?t invent this pattern, the pattern is from the book I got. I made this bracelet and posted a picture of it, then someone asked me, how I did it, so I decided to make a tutorial. :)
You need 8 strings (90 cm): 4 strings of 2 colors, yellow(Y) and brown(B) for example
Set up: YYYYBBBB

Step 1