could write
Irregular verb: write - wrote- written

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could write
you could write
she could write
we could write
you could write
they could write 	I could be writing
you could be writing
she could be writing
we could be writing
you could be writing
they could be writing	I could have written
you could have written
she could have written
we could have written
you could have written
they could have written	I could have been writing
you could have been writing
she could have been writing
we could have been writing
you could have been writing
they could have been writing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not write
you could not write
she could not write
we could not write
you could not write
they could not write 	I could not be writing
you could not be writing
she could not be writing
we could not be writing
you could not be writing
they could not be writing	I could not have written
you could not have written
she could not have written
we could not have written
you could not have written
they could not have written	I could not have been writing
you could not have been writing
she could not have been writing
we could not have been writing
you could not have been writing
they could not have been writing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I write?
could you write?
could she write?
could we write?
could you write?
could they write? 	could I be writing?
could you be writing?
could she be writing?
could we be writing?
could you be writing?
could they be writing? 	could I have written?
could you have written?
could she have written?
could we have written?
could you have written?
could they have written? 	could I have been writing?
could you have been writing?
could she have been writing?
could we have been writing?
could you have been writing?
could they have been writing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not write?
could you not write?
could she not write?
could we not write?
could you not write?
could they not write? 	could I not be writing?
could you not be writing?
could she not be writing?
could we not be writing?
could you not be writing?
could they not be writing? 	could I not have written?
could you not have written?
could she not have written?
could we not have written?
could you not have written?
could they not have written? 	could I not have been writing?
could you not have been writing?
could she not have been writing?
could we not have been writing?
could you not have been writing?
could they not have been writing?