Regular verb: alter alter - alter altered - alter altered
Warning, this verb may not exist. Conjugation is given as example.
Indicative
Present
I alter alter you alter alter he alter alters we alter alter you alter alter they alter alter
Present continuous
I'm alter altering you're alter altering he's alter altering we're alter altering you're alter altering they're alter altering
Preterite
I alter altered you alter altered he alter altered we alter altered you alter altered they alter altered
Preterite continuous
I was alter altering you were alter altering he was alter altering we were alter altering you were alter altering they were alter altering
Present perfect
I've alter altered you've alter altered he's alter altered we've alter altered you've alter altered they've alter altered
Present perfect continuous
I've been alter altering you've been alter altering he's been alter altering we've been alter altering you've been alter altering they've been alter altering
Pluperfect
I'd alter altered you'd alter altered he'd alter altered we'd alter altered you'd alter altered they'd alter altered
Pluperfect continuous
I'd been alter altering you'd been alter altering he'd been alter altering we'd been alter altering you'd been alter altering they'd been alter altering
Future
I'll alter alter you'll alter alter he'll alter alter we'll alter alter you'll alter alter they'll alter alter
Future continuous
I'll be alter altering you'll be alter altering he'll be alter altering we'll be alter altering you'll be alter altering they'll be alter altering
Future perfect
I'll have alter altered you'll have alter altered he'll have alter altered we'll have alter altered you'll have alter altered they'll have alter altered
Future perfect continuous
I'll have been alter altering you'll have been alter altering he'll have been alter altering we'll have been alter altering you'll have been alter altering they'll have been alter altering
Conditional
Present
I'd alter alter you'd alter alter he'd alter alter we'd alter alter you'd alter alter they'd alter alter
Present continuous
I'd be alter altering you'd be alter altering he'd be alter altering we'd be alter altering you'd be alter altering they'd be alter altering
Past
I'd have alter altered you'd have alter altered he'd have alter altered we'd have alter altered you'd have alter altered they'd have alter altered
Past continuous
I'd have been alter altering you'd have been alter altering he'd have been alter altering we'd have been alter altering you'd have been alter altering they'd have been alter altering