1592953434000 1312632483000 term-50872 1616541284521 1312632544000 1616290575860 adlib fitz-online adlib-term-50872 7b9b2094-34fa-3521-ad53-60310448c405 2 1 structures, flexible structures, flexible term reference term-50876 adlib-term-50876 eedcf15a-47ce-37d2-abec-ffd8ce71426f nonrigid structures