
|                                                                     |
| (plain_weave  grouped_warps ,(basket_weave ))                       |
|                                                                     |
| (basket_weave  typed ,                                              |
|  (type_2_to_1 ),                                                    |
|  (type_2_to_2 ),                                                    |
|  (type_4_to_4 ))                                                    |
|      