could botanize
Regular verb: botanize - botanized- botanized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could botanize
you could botanize
he could botanize
we could botanize
you could botanize
they could botanize 	I could be botanizing
you could be botanizing
he could be botanizing
we could be botanizing
you could be botanizing
they could be botanizing	I could have botanized
you could have botanized
he could have botanized
we could have botanized
you could have botanized
they could have botanized	I could have been botanizing
you could have been botanizing
he could have been botanizing
we could have been botanizing
you could have been botanizing
they could have been botanizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't botanize
you couldn't botanize
he couldn't botanize
we couldn't botanize
you couldn't botanize
they couldn't botanize 	I couldn't be botanizing
you couldn't be botanizing
he couldn't be botanizing
we couldn't be botanizing
you couldn't be botanizing
they couldn't be botanizing	I couldn't have botanized
you couldn't have botanized
he couldn't have botanized
we couldn't have botanized
you couldn't have botanized
they couldn't have botanized	I couldn't have been botanizing
you couldn't have been botanizing
he couldn't have been botanizing
we couldn't have been botanizing
you couldn't have been botanizing
they couldn't have been botanizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I botanize?
could you botanize?
could he botanize?
could we botanize?
could you botanize?
could they botanize? 	could I be botanizing?
could you be botanizing?
could he be botanizing?
could we be botanizing?
could you be botanizing?
could they be botanizing? 	could I have botanized?
could you have botanized?
could he have botanized?
could we have botanized?
could you have botanized?
could they have botanized? 	could I have been botanizing?
could you have been botanizing?
could he have been botanizing?
could we have been botanizing?
could you have been botanizing?
could they have been botanizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I botanize?
couldn't you botanize?
couldn't he botanize?
couldn't we botanize?
couldn't you botanize?
couldn't they botanize? 	couldn't I be botanizing?
couldn't you be botanizing?
couldn't he be botanizing?
couldn't we be botanizing?
couldn't you be botanizing?
couldn't they be botanizing? 	couldn't I have botanized?
couldn't you have botanized?
couldn't he have botanized?
couldn't we have botanized?
couldn't you have botanized?
couldn't they have botanized? 	couldn't I have been botanizing?
couldn't you have been botanizing?
couldn't he have been botanizing?
couldn't we have been botanizing?
couldn't you have been botanizing?
couldn't they have been botanizing?