can alternate
Regular verb: alternate - alternated- alternated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can alternate
you can alternate
she can alternate
we can alternate
you can alternate
they can alternate 	I can be alternating
you can be alternating
she can be alternating
we can be alternating
you can be alternating
they can be alternating	I can have alternated
you can have alternated
she can have alternated
we can have alternated
you can have alternated
they can have alternated	I can have been alternating
you can have been alternating
she can have been alternating
we can have been alternating
you can have been alternating
they can have been alternating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't alternate
you can't alternate
she can't alternate
we can't alternate
you can't alternate
they can't alternate 	I can't be alternating
you can't be alternating
she can't be alternating
we can't be alternating
you can't be alternating
they can't be alternating	I can't have alternated
you can't have alternated
she can't have alternated
we can't have alternated
you can't have alternated
they can't have alternated	I can't have been alternating
you can't have been alternating
she can't have been alternating
we can't have been alternating
you can't have been alternating
they can't have been alternating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I alternate?
can you alternate?
can she alternate?
can we alternate?
can you alternate?
can they alternate? 	can I be alternating?
can you be alternating?
can she be alternating?
can we be alternating?
can you be alternating?
can they be alternating? 	can I have alternated?
can you have alternated?
can she have alternated?
can we have alternated?
can you have alternated?
can they have alternated? 	can I have been alternating?
can you have been alternating?
can she have been alternating?
can we have been alternating?
can you have been alternating?
can they have been alternating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I alternate?
can't you alternate?
can't she alternate?
can't we alternate?
can't you alternate?
can't they alternate? 	can't I be alternating?
can't you be alternating?
can't she be alternating?
can't we be alternating?
can't you be alternating?
can't they be alternating? 	can't I have alternated?
can't you have alternated?
can't she have alternated?
can't we have alternated?
can't you have alternated?
can't they have alternated? 	can't I have been alternating?
can't you have been alternating?
can't she have been alternating?
can't we have been alternating?
can't you have been alternating?
can't they have been alternating?