could stare
Regular verb: stare - stared- stared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could stare
you could stare
she could stare
we could stare
you could stare
they could stare 	I could be staring
you could be staring
she could be staring
we could be staring
you could be staring
they could be staring	I could have stared
you could have stared
she could have stared
we could have stared
you could have stared
they could have stared	I could have been staring
you could have been staring
she could have been staring
we could have been staring
you could have been staring
they could have been staring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't stare
you couldn't stare
she couldn't stare
we couldn't stare
you couldn't stare
they couldn't stare 	I couldn't be staring
you couldn't be staring
she couldn't be staring
we couldn't be staring
you couldn't be staring
they couldn't be staring	I couldn't have stared
you couldn't have stared
she couldn't have stared
we couldn't have stared
you couldn't have stared
they couldn't have stared	I couldn't have been staring
you couldn't have been staring
she couldn't have been staring
we couldn't have been staring
you couldn't have been staring
they couldn't have been staring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I stare?
could you stare?
could she stare?
could we stare?
could you stare?
could they stare? 	could I be staring?
could you be staring?
could she be staring?
could we be staring?
could you be staring?
could they be staring? 	could I have stared?
could you have stared?
could she have stared?
could we have stared?
could you have stared?
could they have stared? 	could I have been staring?
could you have been staring?
could she have been staring?
could we have been staring?
could you have been staring?
could they have been staring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I stare?
couldn't you stare?
couldn't she stare?
couldn't we stare?
couldn't you stare?
couldn't they stare? 	couldn't I be staring?
couldn't you be staring?
couldn't she be staring?
couldn't we be staring?
couldn't you be staring?
couldn't they be staring? 	couldn't I have stared?
couldn't you have stared?
couldn't she have stared?
couldn't we have stared?
couldn't you have stared?
couldn't they have stared? 	couldn't I have been staring?
couldn't you have been staring?
couldn't she have been staring?
couldn't we have been staring?
couldn't you have been staring?
couldn't they have been staring?