to constrain
Regular verb: constrain - constrained- constrained

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I constrain
you constrain
she constrains
we constrain
you constrain
they constrain 	I'mconstraining
you'reconstraining
she'sconstraining
we'reconstraining
you'reconstraining
they'reconstraining	I constrained
you constrained
she constrained
we constrained
you constrained
they constrained	Iwasconstraining
youwereconstraining
shewasconstraining
wewereconstraining
youwereconstraining
theywereconstraining	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've constrained
you've constrained
she's constrained
we've constrained
you've constrained
they've constrained	I'vebeen constraining
you'vebeen constraining
she'sbeen constraining
we'vebeen constraining
you'vebeen constraining
they'vebeen constraining	I'd constrained
you'd constrained
she'd constrained
we'd constrained
you'd constrained
they'd constrained	I'd been constraining
you'd been constraining
she'd been constraining
we'd been constraining
you'd been constraining
they'd been constraining	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll constrain
you'll constrain
she'll constrain
we'll constrain
you'll constrain
they'll constrain 	I'll be constraining
you'll be constraining
she'll be constraining
we'll be constraining
you'll be constraining
they'll be constraining	I'll have constrained
you'll have constrained
she'll have constrained
we'll have constrained
you'll have constrained
they'll have constrained	I'll have been constraining
you'll have been constraining
she'll have been constraining
we'll have been constraining
you'll have been constraining
they'll have been constraining	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd constrain
you'd constrain
she'd constrain
we'd constrain
you'd constrain
they'd constrain 	I'd be constraining
you'd be constraining
she'd be constraining
we'd be constraining
you'd be constraining
they'd be constraining	I'd have constrained
you'd have constrained
she'd have constrained
we'd have constrained
you'd have constrained
they'd have constrained	I'd have been constraining
you'd have been constraining
she'd have been constraining
we'd have been constraining
you'd have been constraining
they'd have been constraining	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to constrain 	 	constrain
Let's constrain
constrain 	 	

Participle 	
Present 	Past 	 	 	
constraining	constrained