Present participle; Past participle - plonking - plonked Present - plonk - plonk - plonks - plonk - plonk - plonk Past - plonked - plonked - plonked - plonked - plonked - plonked Future - will plonk - will plonk - will plonk - will plonk - will plonk - will plonk Present conditional - would plonk - would plonk - would plonk - would plonk - would plonk - would plonk Present Perfect - have plonked - have plonked - has plonked - have plonked - have plonked - have plonked Past Perfect - had plonked - had plonked - had plonked - had plonked - had plonked - had plonked Future Perfect - will have plonked - will have plonked - will have plonked - will have plonked - will have plonked - will have plonked Past conditional - would have plonked - would have plonked - would have plonked - would have plonked - would have plonked - would have plonked Imperative - - - plonk - - - - - - - -