Word mod o/u         
An internal 'o' might be rendered by 'u'
dur.a                N      2 2 NOM P N                 
dur.a                N      2 2 VOC P N                 
dur.a                N      2 2 ACC P N                 
durum, duri  N (2nd) N   [FXXFE]    Medieval  veryrare
hardships (pl.);
dur.a                V      1 1 PRES ACTIVE  IMP 2 S    
duro, durare, duravi, duratus  V (1st)   [XXXBX]  
harden, make hard; become hard/stern; bear, last, remain, continue; endure;
dur.a                ADJ    1 1 NOM S F POS             
dur.a                ADJ    1 1 VOC S F POS             
dur.a                ADJ    1 1 ABL S F POS             
dur.a                ADJ    1 1 NOM P N POS             
dur.a                ADJ    1 1 VOC P N POS             
dur.a                ADJ    1 1 ACC P N POS             
durus, dura -um, durior -or -us, durissimus -a -um  ADJ   [XXXAX]  
hard, stern; harsh, rough, vigorous; cruel, unfeeling, inflexible; durable;