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