               |
|  (plain_weave  one_color ),                                         |
|  (color_groups  ),                                                  |
|  (grouped_warps ),                                                  |
|  (some_thicker  ),                                                  |
|  (crossed_warps ),                                                  |
|  (loop_threads  ),                                                  |
|  (plain_weave  flannel ))                                    