English verb conjugation
TO THUMBTACK

Regular verb: thumbtack - thumbtacked - thumbtacked

Indicative

Present	Present continuous	Preterite	Preterite continuous
I thumbtack you thumbtack she thumbtacks we thumbtack you thumbtack they thumbtack	I'm thumbtacking you're thumbtacking she's thumbtacking we're thumbtacking you're thumbtacking they're thumbtacking	I thumbtacked you thumbtacked she thumbtacked we thumbtacked you thumbtacked they thumbtacked	I was thumbtacking you were thumbtacking she was thumbtacking we were thumbtacking you were thumbtacking they were thumbtacking
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
I've thumbtacked you've thumbtacked she's thumbtacked we've thumbtacked you've thumbtacked they've thumbtacked	I've been thumbtacking you've been thumbtacking she's been thumbtacking we've been thumbtacking you've been thumbtacking they've been thumbtacking	I'd thumbtacked you'd thumbtacked she'd thumbtacked we'd thumbtacked you'd thumbtacked they'd thumbtacked	I'd been thumbtacking you'd been thumbtacking she'd been thumbtacking we'd been thumbtacking you'd been thumbtacking they'd been thumbtacking
Future	Future continuous	Future perfect	Future perfect continuous
I'll thumbtack you'll thumbtack she'll thumbtack we'll thumbtack you'll thumbtack they'll thumbtack	I'll be thumbtacking you'll be thumbtacking she'll be thumbtacking we'll be thumbtacking you'll be thumbtacking they'll be thumbtacking	I'll have thumbtacked you'll have thumbtacked she'll have thumbtacked we'll have thumbtacked you'll have thumbtacked they'll have thumbtacked	I'll have been thumbtacking you'll have been thumbtacking she'll have been thumbtacking we'll have been thumbtacking you'll have been thumbtacking they'll have been thumbtacking

Conditional

Present	Present continuous	Past	Past continuous
I'd thumbtack you'd thumbtack she'd thumbtack we'd thumbtack you'd thumbtack they'd thumbtack	I'd be thumbtacking you'd be thumbtacking she'd be thumbtacking we'd be thumbtacking you'd be thumbtacking they'd be thumbtacking	I'd have thumbtacked you'd have thumbtacked she'd have thumbtacked we'd have thumbtacked you'd have thumbtacked they'd have thumbtacked	I'd have been thumbtacking you'd have been thumbtacking she'd have been thumbtacking we'd have been thumbtacking you'd have been thumbtacking they'd have been thumbtacking

Infinitive

Imperative

Infinitive		Imperative
to thumbtack		thumbtack Let's thumbtack thumbtack

Participle

Present	Past
thumbtacking	thumbtacked