Many verbs in Italian, especially the -ere verbs, have irregular past participles. A list of some of the most common infinitives, along with a sample variation, as well as their past participle forms, appears in the table below.
IRREGULAR PAST PARTICIPLES
INFINITIVE
PAST PARTICIPLE
VARIATION ON THE INFINITIVE
PAST PARTICIPLE
accendere
acceso
riaccendere
riacceso
chiedere
chiesto
richiedere
richiesto
chiudere
chiuso
racchiudere
racchiuso
cogliere
colto
raccogliere
raccolto
cuocere
cotto
stracuocere
stracotto
dire
detto
predire
predetto
dividere
diviso
condividere
condiviso
fare
fatto
strafare
strafatto
leggere
letto
rileggere
riletto
porre
posto
fraporre
fraposto
reggere
retto
correggere
corretto
rispondere
risposto
corrispondere
corrisposto
rompere
rotto
corrompere
corrotto
scegliere
scelto
prescegliere
prescelto
scrivere
scritto
riscrivere
riscritto
trarre
tratto
ritrarre
ritratto
vincere
vinto
convincere
convinto
volgere
volto
rivolgere
rivolto
The irregular past participles of many groups of verbs have repeating patterns. For example, the past participle of any verb that ends in -mettere will also end in -messo:
ammettere (to admit, to allow in, to let in)—ammesso
commettere (to commit, to commission)—commesso
dimettere (to dismiss, to remove)—dimesso
omettere (to omit, to leave out)—omesso
rimettere (to remit, to refer)—rimesso
Once you recognize the patterns, you'll be on your way to rapidly becoming an esperto of Italian verbs!
From:https://www.dbfei.com/Article/yidaliyu/201311/7716.html