English verb conjugation
TO GRUMBLE

Regular verb: grumble - grumbled - grumbled

Indicative

Present	Present continuous	Preterite	Preterite continuous
I grumble you grumble she grumbles we grumble you grumble they grumble	I'm grumbling you're grumbling she's grumbling we're grumbling you're grumbling they're grumbling	I grumbled you grumbled she grumbled we grumbled you grumbled they grumbled	I was grumbling you were grumbling she was grumbling we were grumbling you were grumbling they were grumbling
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
I've grumbled you've grumbled she's grumbled we've grumbled you've grumbled they've grumbled	I've been grumbling you've been grumbling she's been grumbling we've been grumbling you've been grumbling they've been grumbling	I'd grumbled you'd grumbled she'd grumbled we'd grumbled you'd grumbled they'd grumbled	I'd been grumbling you'd been grumbling she'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 she'll grumble we'll grumble you'll grumble they'll grumble	I'll be grumbling you'll be grumbling she'll be grumbling we'll be grumbling you'll be grumbling they'll be grumbling	I'll have grumbled you'll have grumbled she'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 she'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 she'd grumble we'd grumble you'd grumble they'd grumble	I'd be grumbling you'd be grumbling she'd be grumbling we'd be grumbling you'd be grumbling they'd be grumbling	I'd have grumbled you'd have grumbled she'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 she'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