English verb conjugation
COULD READ

Irregular verb: read - read - read

Affirmation

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

Negation

Simple form	V-ing form
I couldn't read you couldn't read she couldn't read we couldn't read you couldn't read they couldn't read	I couldn't be reading you couldn't be reading she couldn't be reading we couldn't be reading you couldn't be reading they couldn't be reading
Perfect	V-ing perfect
I couldn't have read you couldn't have read she couldn't have read we couldn't have read you couldn't have read they couldn't have read	I couldn't have been reading you couldn't have been reading she couldn't have been reading we couldn't have been reading you couldn't have been reading they couldn't have been reading

Interrogative form

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

Interro-negative form

Simple form	V-ing form
couldn't I read? couldn't you read? couldn't she read? couldn't we read? couldn't you read? couldn't they read?	couldn't I be reading? couldn't you be reading? couldn't she be reading? couldn't we be reading? couldn't you be reading? couldn't they be reading?
Perfect	V-ing perfect
couldn't I have read? couldn't you have read? couldn't she have read? couldn't we have read? couldn't you have read? couldn't they have read?	couldn't I have been reading? couldn't you have been reading? couldn't she have been reading? couldn't we have been reading? couldn't you have been reading? couldn't they have been reading?