could bead
Regular verb: bead - beaded- beaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bead
you could bead
she could bead
we could bead
you could bead
they could bead 	I could be beading
you could be beading
she could be beading
we could be beading
you could be beading
they could be beading	I could have beaded
you could have beaded
she could have beaded
we could have beaded
you could have beaded
they could have beaded	I could have been beading
you could have been beading
she could have been beading
we could have been beading
you could have been beading
they could have been beading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not bead
you could not bead
she could not bead
we could not bead
you could not bead
they could not bead 	I could not be beading
you could not be beading
she could not be beading
we could not be beading
you could not be beading
they could not be beading	I could not have beaded
you could not have beaded
she could not have beaded
we could not have beaded
you could not have beaded
they could not have beaded	I could not have been beading
you could not have been beading
she could not have been beading
we could not have been beading
you could not have been beading
they could not have been beading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bead?
could you bead?
could she bead?
could we bead?
could you bead?
could they bead? 	could I be beading?
could you be beading?
could she be beading?
could we be beading?
could you be beading?
could they be beading? 	could I have beaded?
could you have beaded?
could she have beaded?
could we have beaded?
could you have beaded?
could they have beaded? 	could I have been beading?
could you have been beading?
could she have been beading?
could we have been beading?
could you have been beading?
could they have been beading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not bead?
could you not bead?
could she not bead?
could we not bead?
could you not bead?
could they not bead? 	could I not be beading?
could you not be beading?
could she not be beading?
could we not be beading?
could you not be beading?
could they not be beading? 	could I not have beaded?
could you not have beaded?
could she not have beaded?
could we not have beaded?
could you not have beaded?
could they not have beaded? 	could I not have been beading?
could you not have been beading?
could she not have been beading?
could we not have been beading?
could you not have been beading?
could they not have been beading?