to have made a mistake
We must have made a mistake.
Devem ter cometido um erro ao enviá-lo para você.
They must have made a mistake sending it to you.
— PK (2014)
Pedi perdão por ter cometido um erro.
I asked for forgiveness for having made a mistake.
I must have made a mistake.
Alguém deve ter cometido um erro.
Someone must have made a mistake.
Eu posso ter cometido um erro.
I may have made a mistake.
Eu devo ter cometido um erro em algum lugar.
I must have made a mistake somewhere.
O Tom admitiu ter cometido um erro na fatura.
Tom admitted to making a mistake on the invoice.