We had boy, m/c, boy, girl, boy. At that point I was convinced that the m/c was a girl and it was good fortune that I had carried the girl to term.
However, we then had m/c, girl, m/c, m/c, girl, girl, girl, m/c, m/c, girl, m/c, m/c.
So b,b,g,b,g,g,g,g,g.
I do wonder if there is something that makes it more likely to have boy or girl. My mil had 5 boys and her 3 sisters all had boys. However, out of 19 grandchildren only 4 are boys.