to grumble
Regular verb: grumble - grumbled- grumbled

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I grumble
you grumble
he grumbles
we grumble
you grumble
they grumble 	I'mgrumbling
you'regrumbling
he'sgrumbling
we'regrumbling
you'regrumbling
they'regrumbling	I grumbled
you grumbled
he grumbled
we grumbled
you grumbled
they grumbled	Iwasgrumbling
youweregrumbling
hewasgrumbling
weweregrumbling
youweregrumbling
theyweregrumbling	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've grumbled
you've grumbled
he's grumbled
we've grumbled
you've grumbled
they've grumbled	I'vebeen grumbling
you'vebeen grumbling
he'sbeen grumbling
we'vebeen grumbling
you'vebeen grumbling
they'vebeen grumbling	I'd grumbled
you'd grumbled
he'd grumbled
we'd grumbled
you'd grumbled
they'd grumbled	I'd been grumbling
you'd been grumbling
he'd been grumbling
we'd been grumbling
you'd been grumbling
they'd been grumbling	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll grumble
you'll grumble
he'll grumble
we'll grumble
you'll grumble
they'll grumble 	I'll be grumbling
you'll be grumbling
he'll be grumbling
we'll be grumbling
you'll be grumbling
they'll be grumbling	I'll have grumbled
you'll have grumbled
he'll have grumbled
we'll have grumbled
you'll have grumbled
they'll have grumbled	I'll have been grumbling
you'll have been grumbling
he'll have been grumbling
we'll have been grumbling
you'll have been grumbling
they'll have been grumbling	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd grumble
you'd grumble
he'd grumble
we'd grumble
you'd grumble
they'd grumble 	I'd be grumbling
you'd be grumbling
he'd be grumbling
we'd be grumbling
you'd be grumbling
they'd be grumbling	I'd have grumbled
you'd have grumbled
he'd have grumbled
we'd have grumbled
you'd have grumbled
they'd have grumbled	I'd have been grumbling
you'd have been grumbling
he'd have been grumbling
we'd have been grumbling
you'd have been grumbling
they'd have been grumbling	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to grumble 	 	grumble
Let's grumble
grumble 	 	

Participle 	
Present 	Past 	 	 	
grumbling	grumbled