to alter
Regular verb: alter - altered- altered

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I alter
you alter
he alters
we alter
you alter
they alter 	I'maltering
you'realtering
he'saltering
we'realtering
you'realtering
they'realtering	I altered
you altered
he altered
we altered
you altered
they altered	Iwasaltering
youwerealtering
hewasaltering
wewerealtering
youwerealtering
theywerealtering	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've altered
you've altered
he's altered
we've altered
you've altered
they've altered	I'vebeen altering
you'vebeen altering
he'sbeen altering
we'vebeen altering
you'vebeen altering
they'vebeen altering	I'd altered
you'd altered
he'd altered
we'd altered
you'd altered
they'd altered	I'd been altering
you'd been altering
he'd been altering
we'd been altering
you'd been altering
they'd been altering	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll alter
you'll alter
he'll alter
we'll alter
you'll alter
they'll alter 	I'll be altering
you'll be altering
he'll be altering
we'll be altering
you'll be altering
they'll be altering	I'll have altered
you'll have altered
he'll have altered
we'll have altered
you'll have altered
they'll have altered	I'll have been altering
you'll have been altering
he'll have been altering
we'll have been altering
you'll have been altering
they'll have been altering	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd alter
you'd alter
he'd alter
we'd alter
you'd alter
they'd alter 	I'd be altering
you'd be altering
he'd be altering
we'd be altering
you'd be altering
they'd be altering	I'd have altered
you'd have altered
he'd have altered
we'd have altered
you'd have altered
they'd have altered	I'd have been altering
you'd have been altering
he'd have been altering
we'd have been altering
you'd have been altering
they'd have been altering	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to alter 	 	alter
Let's alter
alter 	 	

Participle 	
Present 	Past 	 	 	
altering	altered