can crash
Regular verb: crash - crashed- crashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can crash
you can crash
she can crash
we can crash
you can crash
they can crash 	I can be crashing
you can be crashing
she can be crashing
we can be crashing
you can be crashing
they can be crashing	I can have crashed
you can have crashed
she can have crashed
we can have crashed
you can have crashed
they can have crashed	I can have been crashing
you can have been crashing
she can have been crashing
we can have been crashing
you can have been crashing
they can have been crashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't crash
you can't crash
she can't crash
we can't crash
you can't crash
they can't crash 	I can't be crashing
you can't be crashing
she can't be crashing
we can't be crashing
you can't be crashing
they can't be crashing	I can't have crashed
you can't have crashed
she can't have crashed
we can't have crashed
you can't have crashed
they can't have crashed	I can't have been crashing
you can't have been crashing
she can't have been crashing
we can't have been crashing
you can't have been crashing
they can't have been crashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I crash?
can you crash?
can she crash?
can we crash?
can you crash?
can they crash? 	can I be crashing?
can you be crashing?
can she be crashing?
can we be crashing?
can you be crashing?
can they be crashing? 	can I have crashed?
can you have crashed?
can she have crashed?
can we have crashed?
can you have crashed?
can they have crashed? 	can I have been crashing?
can you have been crashing?
can she have been crashing?
can we have been crashing?
can you have been crashing?
can they have been crashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I crash?
can't you crash?
can't she crash?
can't we crash?
can't you crash?
can't they crash? 	can't I be crashing?
can't you be crashing?
can't she be crashing?
can't we be crashing?
can't you be crashing?
can't they be crashing? 	can't I have crashed?
can't you have crashed?
can't she have crashed?
can't we have crashed?
can't you have crashed?
can't they have crashed? 	can't I have been crashing?
can't you have been crashing?
can't she have been crashing?
can't we have been crashing?
can't you have been crashing?
can't they have been crashing?