The following verbs have irregular past participles:
– aperto
– bevuto
– chiesto
– chiuso
– corso
– dato
– detto
– stato
– fatto
– letto
-messo
– morto
– nato
– nascosto
– offerto
– pianto
– preso
-(ri) conosciuto
– riso
– sceso
– scritto
– speso
– stato
– visto
– venuto
– vinto
– vissuto
to open
to drink
to ask
to close
to run
to give
to say
to be
to do; to make
to read
to put
to die
to be born
to hide
to offer
to cry
to take
to know; to recognize
to laugh
to descend; to go down; to get off
to write
to spend
to stay
to see
to come
to win
to live