construir is the model for all ·uir verbs. It has a uuy stem change (see page Finding the Model) in both Boot and Gerund positions.

18 verbs out of the top 350 Spanish verbs conjugate like construir:

29 uncommon Spanish verbs conjugate like construir:

These conjugation tables are generated with seven-stems-conjugator, the open-source Python conjugation engine behind Seven Stems.