Present participle; Past participle - ulcerating - ulcerated Present - ulcerate - ulcerate - ulcerates - ulcerate - ulcerate - ulcerate Past - ulcerated - ulcerated - ulcerated - ulcerated - ulcerated - ulcerated Future - will ulcerate - will ulcerate - will ulcerate - will ulcerate - will ulcerate - will ulcerate Present conditional - would ulcerate - would ulcerate - would ulcerate - would ulcerate - would ulcerate - would ulcerate Present Perfect - have ulcerated - have ulcerated - has ulcerated - have ulcerated - have ulcerated - have ulcerated Past Perfect - had ulcerated - had ulcerated - had ulcerated - had ulcerated - had ulcerated - had ulcerated Future Perfect - will have ulcerated - will have ulcerated - will have ulcerated - will have ulcerated - will have ulcerated - will have ulcerated Past conditional - would have ulcerated - would have ulcerated - would have ulcerated - would have ulcerated - would have ulcerated - would have ulcerated Imperative - - - ulcerate - - - - - - - -