to sustain
Regular verb: sustain - sustained- sustained

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I sustain
you sustain
she sustains
we sustain
you sustain
they sustain 	I'msustaining
you'resustaining
she'ssustaining
we'resustaining
you'resustaining
they'resustaining	I sustained
you sustained
she sustained
we sustained
you sustained
they sustained	Iwassustaining
youweresustaining
shewassustaining
weweresustaining
youweresustaining
theyweresustaining	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I've sustained
you've sustained
she's sustained
we've sustained
you've sustained
they've sustained	I'vebeen sustaining
you'vebeen sustaining
she'sbeen sustaining
we'vebeen sustaining
you'vebeen sustaining
they'vebeen sustaining	I'd sustained
you'd sustained
she'd sustained
we'd sustained
you'd sustained
they'd sustained	I'd been sustaining
you'd been sustaining
she'd been sustaining
we'd been sustaining
you'd been sustaining
they'd been sustaining	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I'll sustain
you'll sustain
she'll sustain
we'll sustain
you'll sustain
they'll sustain 	I'll be sustaining
you'll be sustaining
she'll be sustaining
we'll be sustaining
you'll be sustaining
they'll be sustaining	I'll have sustained
you'll have sustained
she'll have sustained
we'll have sustained
you'll have sustained
they'll have sustained	I'll have been sustaining
you'll have been sustaining
she'll have been sustaining
we'll have been sustaining
you'll have been sustaining
they'll have been sustaining	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I'd sustain
you'd sustain
she'd sustain
we'd sustain
you'd sustain
they'd sustain 	I'd be sustaining
you'd be sustaining
she'd be sustaining
we'd be sustaining
you'd be sustaining
they'd be sustaining	I'd have sustained
you'd have sustained
she'd have sustained
we'd have sustained
you'd have sustained
they'd have sustained	I'd have been sustaining
you'd have been sustaining
she'd have been sustaining
we'd have been sustaining
you'd have been sustaining
they'd have been sustaining	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to sustain 	 	sustain
Let's sustain
sustain 	 	

Participle 	
Present 	Past 	 	 	
sustaining	sustained