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 couldn't bead
you couldn't bead
she couldn't bead
we couldn't bead
you couldn't bead
they couldn't bead 	I couldn't be beading
you couldn't be beading
she couldn't be beading
we couldn't be beading
you couldn't be beading
they couldn't be beading	I couldn't have beaded
you couldn't have beaded
she couldn't have beaded
we couldn't have beaded
you couldn't have beaded
they couldn't have beaded	I couldn't have been beading
you couldn't have been beading
she couldn't have been beading
we couldn't have been beading
you couldn't have been beading
they couldn't 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 	
couldn't I bead?
couldn't you bead?
couldn't she bead?
couldn't we bead?
couldn't you bead?
couldn't they bead? 	couldn't I be beading?
couldn't you be beading?
couldn't she be beading?
couldn't we be beading?
couldn't you be beading?
couldn't they be beading? 	couldn't I have beaded?
couldn't you have beaded?
couldn't she have beaded?
couldn't we have beaded?
couldn't you have beaded?
couldn't they have beaded? 	couldn't I have been beading?
couldn't you have been beading?
couldn't she have been beading?
couldn't we have been beading?
couldn't you have been beading?
couldn't they have been beading?