Ch 2 at the beg of the row does not count as a st.
Ch 3 at the beg of the row counts as a st.
The yarn color is changed on each row during the chs pattern
No turning when making the chs pattern. Instead, each row is made with one color of the yarn, and the next row made with the second color starting at the beg of the previous row. That is each color is carried to one side of row one at a time