This is the 8396th most frequent Catalan word.
deuen
"Deuen" means "must" or "they owe" depending on context.
'Deuen' is used to express probability or assumption, suggesting that it is likely that the students are tired.
Els estudiants deuen estar cansats després de l'examen.
The students must be tired after the exam.
'Deuen' indicates an assumption about the situation, inferring what is probably occurring.
Deuen dinar amb els seus oncles a casa seva.
They must be having lunch with their uncles at their home.
Here, 'deuen' is used to assume the location of the books based on logical reasoning.