352a553d_gular_Verbs___UsingEnglish_com__Past_Participle
[Base Form] Sunburn [Past Simple] Sunburned/Sunburnt [3rd Person Singular] Sunburns [Present Participle / Gerund] Sunburning [Past Participle] 
Sunburned/Sunburnt
English Irregular Verbs - UsingEnglish.com