English verb conjugation
CAN CONK

Regular verb: conk - conked - conked

Affirmation

Simple form	V-ing form
I can conk you can conk he can conk we can conk you can conk they can conk	I can be conking you can be conking he can be conking we can be conking you can be conking they can be conking
Perfect	V-ing perfect
I can have conked you can have conked he can have conked we can have conked you can have conked they can have conked	I can have been conking you can have been conking he can have been conking we can have been conking you can have been conking they can have been conking

Negation

Simple form	V-ing form
I can't conk you can't conk he can't conk we can't conk you can't conk they can't conk	I can't be conking you can't be conking he can't be conking we can't be conking you can't be conking they can't be conking
Perfect	V-ing perfect
I can't have conked you can't have conked he can't have conked we can't have conked you can't have conked they can't have conked	I can't have been conking you can't have been conking he can't have been conking we can't have been conking you can't have been conking they can't have been conking

Interrogative form

Simple form	V-ing form
can I conk? can you conk? can he conk? can we conk? can you conk? can they conk?	can I be conking? can you be conking? can he be conking? can we be conking? can you be conking? can they be conking?
Perfect	V-ing perfect
can I have conked? can you have conked? can he have conked? can we have conked? can you have conked? can they have conked?	can I have been conking? can you have been conking? can he have been conking? can we have been conking? can you have been conking? can they have been conking?

Interro-negative form

Simple form	V-ing form
can't I conk? can't you conk? can't he conk? can't we conk? can't you conk? can't they conk?	can't I be conking? can't you be conking? can't he be conking? can't we be conking? can't you be conking? can't they be conking?
Perfect	V-ing perfect
can't I have conked? can't you have conked? can't he have conked? can't we have conked? can't you have conked? can't they have conked?	can't I have been conking? can't you have been conking? can't he have been conking? can't we have been conking? can't you have been conking? can't they have been conking?