'ui' can change to 'uy' (no pattern established here)

construir - to build, manufacture
afluir a - to flow to, to flock to
confluir - to converge, to meet
contribuir - to contribute
derruir - to demolish, to knock down
destituir - to dismiss
destruir - to destroy, to wreck, to demolish
diluir - to dilute
disminuir - to reduce, to decrease
distribuir - to distribute
fluir - to flow
incluir - to include
influir - to influence
recluir - to lock away, to shut away
reconstruir - to rebuild, to reconstruct
rehuir - to avoid
andar - to walk
desandar - to go back over, to retrace the trail
asir - to grasp, to take hold of
caber - to fit
caer - to fall
recaer - to relapse