could sight-read
Irregular verb: sight-read - sight-read- sight-read

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sight-read
you could sight-read
she could sight-read
we could sight-read
you could sight-read
they could sight-read 	I could be sight-reading
you could be sight-reading
she could be sight-reading
we could be sight-reading
you could be sight-reading
they could be sight-reading	I could have sight-read
you could have sight-read
she could have sight-read
we could have sight-read
you could have sight-read
they could have sight-read	I could have been sight-reading
you could have been sight-reading
she could have been sight-reading
we could have been sight-reading
you could have been sight-reading
they could have been sight-reading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not sight-read
you could not sight-read
she could not sight-read
we could not sight-read
you could not sight-read
they could not sight-read 	I could not be sight-reading
you could not be sight-reading
she could not be sight-reading
we could not be sight-reading
you could not be sight-reading
they could not be sight-reading	I could not have sight-read
you could not have sight-read
she could not have sight-read
we could not have sight-read
you could not have sight-read
they could not have sight-read	I could not have been sight-reading
you could not have been sight-reading
she could not have been sight-reading
we could not have been sight-reading
you could not have been sight-reading
they could not have been sight-reading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sight-read?
could you sight-read?
could she sight-read?
could we sight-read?
could you sight-read?
could they sight-read? 	could I be sight-reading?
could you be sight-reading?
could she be sight-reading?
could we be sight-reading?
could you be sight-reading?
could they be sight-reading? 	could I have sight-read?
could you have sight-read?
could she have sight-read?
could we have sight-read?
could you have sight-read?
could they have sight-read? 	could I have been sight-reading?
could you have been sight-reading?
could she have been sight-reading?
could we have been sight-reading?
could you have been sight-reading?
could they have been sight-reading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not sight-read?
could you not sight-read?
could she not sight-read?
could we not sight-read?
could you not sight-read?
could they not sight-read? 	could I not be sight-reading?
could you not be sight-reading?
could she not be sight-reading?
could we not be sight-reading?
could you not be sight-reading?
could they not be sight-reading? 	could I not have sight-read?
could you not have sight-read?
could she not have sight-read?
could we not have sight-read?
could you not have sight-read?
could they not have sight-read? 	could I not have been sight-reading?
could you not have been sight-reading?
could she not have been sight-reading?
could we not have been sight-reading?
could you not have been sight-reading?
could they not have been sight-reading?