to quack
Regular verb: quack - quacked- quacked

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I quack
you quack
he quacks
we quack
you quack
they quack 	I'mquacking
you'requacking
he'squacking
we'requacking
you'requacking
they'requacking	I quacked
you quacked
he quacked
we quacked
you quacked
they quacked	Iwasquacking
youwerequacking
hewasquacking
wewerequacking
youwerequacking
theywerequacking	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've quacked
you've quacked
he's quacked
we've quacked
you've quacked
they've quacked	I'vebeen quacking
you'vebeen quacking
he'sbeen quacking
we'vebeen quacking
you'vebeen quacking
they'vebeen quacking	I'd quacked
you'd quacked
he'd quacked
we'd quacked
you'd quacked
they'd quacked	I'd been quacking
you'd been quacking
he'd been quacking
we'd been quacking
you'd been quacking
they'd been quacking	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll quack
you'll quack
he'll quack
we'll quack
you'll quack
they'll quack 	I'll be quacking
you'll be quacking
he'll be quacking
we'll be quacking
you'll be quacking
they'll be quacking	I'll have quacked
you'll have quacked
he'll have quacked
we'll have quacked
you'll have quacked
they'll have quacked	I'll have been quacking
you'll have been quacking
he'll have been quacking
we'll have been quacking
you'll have been quacking
they'll have been quacking	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd quack
you'd quack
he'd quack
we'd quack
you'd quack
they'd quack 	I'd be quacking
you'd be quacking
he'd be quacking
we'd be quacking
you'd be quacking
they'd be quacking	I'd have quacked
you'd have quacked
he'd have quacked
we'd have quacked
you'd have quacked
they'd have quacked	I'd have been quacking
you'd have been quacking
he'd have been quacking
we'd have been quacking
you'd have been quacking
they'd have been quacking	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to quack 	 	quack
Let's quack
quack 	 	

Participle 	
Present 	Past 	 	 	
quacking	quacked