Ibyerekeye iki kintu
- Urutoki TPR igera ku ntoki;kudoda kumurambe ntarengwa no kwambara
- Intwaro "flex zones" kubwinshi
- Abrasion irwanya umusenyi ifuro nitrile yashizwemo imikindo hamwe nigitereko gikomejwe gitanga imbaraga zidasanzwe mumazi, amavuta namavuta