can
Modal auxiliary can - could

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I can't 
you can't 
she can't 
we can't 
you can't 
they can't  	- 	I couldn't 
you couldn't 
she couldn't 
we couldn't 
you couldn't 
they couldn't  	- 	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
- 	- 	- 	- 	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
- 	- 	- 	- 	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
- 	- 	- 	- 	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
- 	 	- 	 	

Participle 	
Present 	Past 	 	 	
- 	-