could mechanize
Regular verb: mechanize - mechanized- mechanized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could mechanize
you could mechanize
he could mechanize
we could mechanize
you could mechanize
they could mechanize 	I could be mechanizing
you could be mechanizing
he could be mechanizing
we could be mechanizing
you could be mechanizing
they could be mechanizing	I could have mechanized
you could have mechanized
he could have mechanized
we could have mechanized
you could have mechanized
they could have mechanized	I could have been mechanizing
you could have been mechanizing
he could have been mechanizing
we could have been mechanizing
you could have been mechanizing
they could have been mechanizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't mechanize
you couldn't mechanize
he couldn't mechanize
we couldn't mechanize
you couldn't mechanize
they couldn't mechanize 	I couldn't be mechanizing
you couldn't be mechanizing
he couldn't be mechanizing
we couldn't be mechanizing
you couldn't be mechanizing
they couldn't be mechanizing	I couldn't have mechanized
you couldn't have mechanized
he couldn't have mechanized
we couldn't have mechanized
you couldn't have mechanized
they couldn't have mechanized	I couldn't have been mechanizing
you couldn't have been mechanizing
he couldn't have been mechanizing
we couldn't have been mechanizing
you couldn't have been mechanizing
they couldn't have been mechanizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I mechanize?
could you mechanize?
could he mechanize?
could we mechanize?
could you mechanize?
could they mechanize? 	could I be mechanizing?
could you be mechanizing?
could he be mechanizing?
could we be mechanizing?
could you be mechanizing?
could they be mechanizing? 	could I have mechanized?
could you have mechanized?
could he have mechanized?
could we have mechanized?
could you have mechanized?
could they have mechanized? 	could I have been mechanizing?
could you have been mechanizing?
could he have been mechanizing?
could we have been mechanizing?
could you have been mechanizing?
could they have been mechanizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I mechanize?
couldn't you mechanize?
couldn't he mechanize?
couldn't we mechanize?
couldn't you mechanize?
couldn't they mechanize? 	couldn't I be mechanizing?
couldn't you be mechanizing?
couldn't he be mechanizing?
couldn't we be mechanizing?
couldn't you be mechanizing?
couldn't they be mechanizing? 	couldn't I have mechanized?
couldn't you have mechanized?
couldn't he have mechanized?
couldn't we have mechanized?
couldn't you have mechanized?
couldn't they have mechanized? 	couldn't I have been mechanizing?
couldn't you have been mechanizing?
couldn't he have been mechanizing?
couldn't we have been mechanizing?
couldn't you have been mechanizing?
couldn't they have been mechanizing?