can knot
Regular verb: knot - knotted- knotted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can knot
you can knot
he can knot
we can knot
you can knot
they can knot 	I can be knotting
you can be knotting
he can be knotting
we can be knotting
you can be knotting
they can be knotting	I can have knotted
you can have knotted
he can have knotted
we can have knotted
you can have knotted
they can have knotted	I can have been knotting
you can have been knotting
he can have been knotting
we can have been knotting
you can have been knotting
they can have been knotting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't knot
you can't knot
he can't knot
we can't knot
you can't knot
they can't knot 	I can't be knotting
you can't be knotting
he can't be knotting
we can't be knotting
you can't be knotting
they can't be knotting	I can't have knotted
you can't have knotted
he can't have knotted
we can't have knotted
you can't have knotted
they can't have knotted	I can't have been knotting
you can't have been knotting
he can't have been knotting
we can't have been knotting
you can't have been knotting
they can't have been knotting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I knot?
can you knot?
can he knot?
can we knot?
can you knot?
can they knot? 	can I be knotting?
can you be knotting?
can he be knotting?
can we be knotting?
can you be knotting?
can they be knotting? 	can I have knotted?
can you have knotted?
can he have knotted?
can we have knotted?
can you have knotted?
can they have knotted? 	can I have been knotting?
can you have been knotting?
can he have been knotting?
can we have been knotting?
can you have been knotting?
can they have been knotting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I knot?
can't you knot?
can't he knot?
can't we knot?
can't you knot?
can't they knot? 	can't I be knotting?
can't you be knotting?
can't he be knotting?
can't we be knotting?
can't you be knotting?
can't they be knotting? 	can't I have knotted?
can't you have knotted?
can't he have knotted?
can't we have knotted?
can't you have knotted?
can't they have knotted? 	can't I have been knotting?
can't you have been knotting?
can't he have been knotting?
can't we have been knotting?
can't you have been knotting?
can't they have been knotting?