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 cannot knot
you cannot knot
he cannot knot
we cannot knot
you cannot knot
they cannot knot 	I cannot be knotting
you cannot be knotting
he cannot be knotting
we cannot be knotting
you cannot be knotting
they cannot be knotting	I cannot have knotted
you cannot have knotted
he cannot have knotted
we cannot have knotted
you cannot have knotted
they cannot have knotted	I cannot have been knotting
you cannot have been knotting
he cannot have been knotting
we cannot have been knotting
you cannot have been knotting
they cannot 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 I not knot?
can you not knot?
can he not knot?
can we not knot?
can you not knot?
can they not knot? 	can I not be knotting?
can you not be knotting?
can he not be knotting?
can we not be knotting?
can you not be knotting?
can they not be knotting? 	can I not have knotted?
can you not have knotted?
can he not have knotted?
can we not have knotted?
can you not have knotted?
can they not have knotted? 	can I not have been knotting?
can you not have been knotting?
can he not have been knotting?
can we not have been knotting?
can you not have been knotting?
can they not have been knotting?