Present participle; Past participle - tugging - tugged Present - tug - tug - tugs - tug - tug - tug Past - tugged - tugged - tugged - tugged - tugged - tugged Future - will tug - will tug - will tug - will tug - will tug - will tug Present conditional - would tug - would tug - would tug - would tug - would tug - would tug Present Perfect - have tugged - have tugged - has tugged - have tugged - have tugged - have tugged Past Perfect - had tugged - had tugged - had tugged - had tugged - had tugged - had tugged Future Perfect - will have tugged - will have tugged - will have tugged - will have tugged - will have tugged - will have tugged Past conditional - would have tugged - would have tugged - would have tugged - would have tugged - would have tugged - would have tugged Imperative - - - tug - - - - - - - -