The conditional perfect tense is formed using the formula below:

conditional conjugation of haber + the past participle = conditional perfect

The conditional conjugation of haber is shown below:

habría	(I would have)
habrías	(you would have)
habría	(he/she/you would have)
habríamos	(we would have)
habríais	(you guys would have)
habrían	(you all/they would have)

The past participle is formed by adding the suffix -ado to -ar verbs and -ido to -er and -ir verbs.

Example: the past participle of hablar (to speak) is hablado . The table below shows the conjugation of hablar in the conditional perfect:

habría hablado	(I would have spoken)
habrías hablado	(you would have spoken)
habría hablado	(he/she/you would have spoken)
habríamos hablado	(we would have spoken)
habríais hablado	(you guys would have spoken)
habrían hablado	(you all/they would have spoken)

Otra vez, habría hablado el profesor de la clase anterior.
Once more, the professor from the previous class would have spoken.

¡No habrías hablado de posesión!
You wouldn't have spoken of possession!

¿Ya habrían hablado con su maestra?
Would they have already spoken to their teacher?