<image>There are several rhombus and equilateral triangle paper pieces, all with a side length of 1. Some of these paper pieces are taken and arranged in the order shown in the figure (with the rhombus in the first position), forming a large parallelogram or trapezoid. If the total number of rhombus and equilateral triangle pieces taken is 2009, then the shape formed by arranging them in the order shown in the figure is ____.
