Forms of the verb argüir represents a rare case of the sequence , and the rules for and clash in this case. The ambiguity is resolved by an additional rule, which states that in cases where diaereses would appear on two consecutive letters, only the second receives one. This thus gives arguïm /arguˈim/, i.e. and arguïa /arguˈia/, but argüir /arˈgwir/, argüint /arˈgwint/ and argüiré /argwiˈre/ as these forms don't receive a diaeresis on the i normally, according to the exception above.
