English verb conjugation
CAN NECK

Regular verb: neck - necked - necked

Affirmation

Simple form	V-ing form
I can neck you can neck he can neck we can neck you can neck they can neck	I can be necking you can be necking he can be necking we can be necking you can be necking they can be necking
Perfect	V-ing perfect
I can have necked you can have necked he can have necked we can have necked you can have necked they can have necked	I can have been necking you can have been necking he can have been necking we can have been necking you can have been necking they can have been necking

Negation

Simple form	V-ing form
I cannot neck you cannot neck he cannot neck we cannot neck you cannot neck they cannot neck	I cannot be necking you cannot be necking he cannot be necking we cannot be necking you cannot be necking they cannot be necking
Perfect	V-ing perfect
I cannot have necked you cannot have necked he cannot have necked we cannot have necked you cannot have necked they cannot have necked	I cannot have been necking you cannot have been necking he cannot have been necking we cannot have been necking you cannot have been necking they cannot have been necking

Interrogative form

Simple form	V-ing form
can I neck? can you neck? can he neck? can we neck? can you neck? can they neck?	can I be necking? can you be necking? can he be necking? can we be necking? can you be necking? can they be necking?
Perfect	V-ing perfect
can I have necked? can you have necked? can he have necked? can we have necked? can you have necked? can they have necked?	can I have been necking? can you have been necking? can he have been necking? can we have been necking? can you have been necking? can they have been necking?

Interro-negative form

Simple form	V-ing form
can I not neck? can you not neck? can he not neck? can we not neck? can you not neck? can they not neck?	can I not be necking? can you not be necking? can he not be necking? can we not be necking? can you not be necking? can they not be necking?
Perfect	V-ing perfect
can I not have necked? can you not have necked? can he not have necked? can we not have necked? can you not have necked? can they not have necked?	can I not have been necking? can you not have been necking? can he not have been necking? can we not have been necking? can you not have been necking? can they not have been necking?