I can tie you can tie she can tie we can tie you can tie they can tie
V-ing form
I can be tying you can be tying she can be tying we can be tying you can be tying they can be tying
Perfect
I can have tied you can have tied she can have tied we can have tied you can have tied they can have tied
V-ing perfect
I can have been tying you can have been tying she can have been tying we can have been tying you can have been tying they can have been tying
Negation
Simple form
I cannot tie you cannot tie she cannot tie we cannot tie you cannot tie they cannot tie
V-ing form
I cannot be tying you cannot be tying she cannot be tying we cannot be tying you cannot be tying they cannot be tying
Perfect
I cannot have tied you cannot have tied she cannot have tied we cannot have tied you cannot have tied they cannot have tied
V-ing perfect
I cannot have been tying you cannot have been tying she cannot have been tying we cannot have been tying you cannot have been tying they cannot have been tying
Interrogative form
Simple form
can I tie? can you tie? can she tie? can we tie? can you tie? can they tie?
V-ing form
can I be tying? can you be tying? can she be tying? can we be tying? can you be tying? can they be tying?
Perfect
can I have tied? can you have tied? can she have tied? can we have tied? can you have tied? can they have tied?
V-ing perfect
can I have been tying? can you have been tying? can she have been tying? can we have been tying? can you have been tying? can they have been tying?
Interro-negative form
Simple form
can I not tie? can you not tie? can she not tie? can we not tie? can you not tie? can they not tie?
V-ing form
can I not be tying? can you not be tying? can she not be tying? can we not be tying? can you not be tying? can they not be tying?
Perfect
can I not have tied? can you not have tied? can she not have tied? can we not have tied? can you not have tied? can they not have tied?
V-ing perfect
can I not have been tying? can you not have been tying? can she not have been tying? can we not have been tying? can you not have been tying? can they not have been tying?