Present participle; Past participle - stinging - stung Present - sting - sting - stings - sting - sting - sting Past - stung - stung - stung - stung - stung - stung Future - will sting - will sting - will sting - will sting - will sting - will sting Present conditional - would sting - would sting - would sting - would sting - would sting - would sting Present Perfect - have stung - have stung - has stung - have stung - have stung - have stung Past Perfect - had stung - had stung - had stung - had stung - had stung - had stung Future Perfect - will have stung - will have stung - will have stung - will have stung - will have stung - will have stung Past conditional - would have stung - would have stung - would have stung - would have stung - would have stung - would have stung Imperative - - - sting - - - - - - - -