can retreat
Regular verb: retreat - retreated- retreated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can retreat
you can retreat
she can retreat
we can retreat
you can retreat
they can retreat 	I can be retreating
you can be retreating
she can be retreating
we can be retreating
you can be retreating
they can be retreating	I can have retreated
you can have retreated
she can have retreated
we can have retreated
you can have retreated
they can have retreated	I can have been retreating
you can have been retreating
she can have been retreating
we can have been retreating
you can have been retreating
they can have been retreating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't retreat
you can't retreat
she can't retreat
we can't retreat
you can't retreat
they can't retreat 	I can't be retreating
you can't be retreating
she can't be retreating
we can't be retreating
you can't be retreating
they can't be retreating	I can't have retreated
you can't have retreated
she can't have retreated
we can't have retreated
you can't have retreated
they can't have retreated	I can't have been retreating
you can't have been retreating
she can't have been retreating
we can't have been retreating
you can't have been retreating
they can't have been retreating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I retreat?
can you retreat?
can she retreat?
can we retreat?
can you retreat?
can they retreat? 	can I be retreating?
can you be retreating?
can she be retreating?
can we be retreating?
can you be retreating?
can they be retreating? 	can I have retreated?
can you have retreated?
can she have retreated?
can we have retreated?
can you have retreated?
can they have retreated? 	can I have been retreating?
can you have been retreating?
can she have been retreating?
can we have been retreating?
can you have been retreating?
can they have been retreating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I retreat?
can't you retreat?
can't she retreat?
can't we retreat?
can't you retreat?
can't they retreat? 	can't I be retreating?
can't you be retreating?
can't she be retreating?
can't we be retreating?
can't you be retreating?
can't they be retreating? 	can't I have retreated?
can't you have retreated?
can't she have retreated?
can't we have retreated?
can't you have retreated?
can't they have retreated? 	can't I have been retreating?
can't you have been retreating?
can't she have been retreating?
can't we have been retreating?
can't you have been retreating?
can't they have been retreating?