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 can't neck you can't neck he can't neck we can't neck you can't neck they can't neck	I can't be necking you can't be necking he can't be necking we can't be necking you can't be necking they can't be necking
Perfect	V-ing perfect
I can't have necked you can't have necked he can't have necked we can't have necked you can't have necked they can't have necked	I can't have been necking you can't have been necking he can't have been necking we can't have been necking you can't have been necking they can't 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't I neck? can't you neck? can't he neck? can't we neck? can't you neck? can't they neck?	can't I be necking? can't you be necking? can't he be necking? can't we be necking? can't you be necking? can't they be necking?
Perfect	V-ing perfect
can't I have necked? can't you have necked? can't he have necked? can't we have necked? can't you have necked? can't they have necked?	can't I have been necking? can't you have been necking? can't he have been necking? can't we have been necking? can't you have been necking? can't they have been necking?