could graze
Regular verb: graze - grazed- grazed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could graze
you could graze
she could graze
we could graze
you could graze
they could graze 	I could be grazing
you could be grazing
she could be grazing
we could be grazing
you could be grazing
they could be grazing	I could have grazed
you could have grazed
she could have grazed
we could have grazed
you could have grazed
they could have grazed	I could have been grazing
you could have been grazing
she could have been grazing
we could have been grazing
you could have been grazing
they could have been grazing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't graze
you couldn't graze
she couldn't graze
we couldn't graze
you couldn't graze
they couldn't graze 	I couldn't be grazing
you couldn't be grazing
she couldn't be grazing
we couldn't be grazing
you couldn't be grazing
they couldn't be grazing	I couldn't have grazed
you couldn't have grazed
she couldn't have grazed
we couldn't have grazed
you couldn't have grazed
they couldn't have grazed	I couldn't have been grazing
you couldn't have been grazing
she couldn't have been grazing
we couldn't have been grazing
you couldn't have been grazing
they couldn't have been grazing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I graze?
could you graze?
could she graze?
could we graze?
could you graze?
could they graze? 	could I be grazing?
could you be grazing?
could she be grazing?
could we be grazing?
could you be grazing?
could they be grazing? 	could I have grazed?
could you have grazed?
could she have grazed?
could we have grazed?
could you have grazed?
could they have grazed? 	could I have been grazing?
could you have been grazing?
could she have been grazing?
could we have been grazing?
could you have been grazing?
could they have been grazing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I graze?
couldn't you graze?
couldn't she graze?
couldn't we graze?
couldn't you graze?
couldn't they graze? 	couldn't I be grazing?
couldn't you be grazing?
couldn't she be grazing?
couldn't we be grazing?
couldn't you be grazing?
couldn't they be grazing? 	couldn't I have grazed?
couldn't you have grazed?
couldn't she have grazed?
couldn't we have grazed?
couldn't you have grazed?
couldn't they have grazed? 	couldn't I have been grazing?
couldn't you have been grazing?
couldn't she have been grazing?
couldn't we have been grazing?
couldn't you have been grazing?
couldn't they have been grazing?