English verb conjugation
CAN SHARK

Regular verb: shark - sharked - sharked

Affirmation

Simple form	V-ing form
I can shark you can shark he can shark we can shark you can shark they can shark	I can be sharking you can be sharking he can be sharking we can be sharking you can be sharking they can be sharking
Perfect	V-ing perfect
I can have sharked you can have sharked he can have sharked we can have sharked you can have sharked they can have sharked	I can have been sharking you can have been sharking he can have been sharking we can have been sharking you can have been sharking they can have been sharking

Negation

Simple form	V-ing form
I cannot shark you cannot shark he cannot shark we cannot shark you cannot shark they cannot shark	I cannot be sharking you cannot be sharking he cannot be sharking we cannot be sharking you cannot be sharking they cannot be sharking
Perfect	V-ing perfect
I cannot have sharked you cannot have sharked he cannot have sharked we cannot have sharked you cannot have sharked they cannot have sharked	I cannot have been sharking you cannot have been sharking he cannot have been sharking we cannot have been sharking you cannot have been sharking they cannot have been sharking

Interrogative form

Simple form	V-ing form
can I shark? can you shark? can he shark? can we shark? can you shark? can they shark?	can I be sharking? can you be sharking? can he be sharking? can we be sharking? can you be sharking? can they be sharking?
Perfect	V-ing perfect
can I have sharked? can you have sharked? can he have sharked? can we have sharked? can you have sharked? can they have sharked?	can I have been sharking? can you have been sharking? can he have been sharking? can we have been sharking? can you have been sharking? can they have been sharking?

Interro-negative form

Simple form	V-ing form
can I not shark? can you not shark? can he not shark? can we not shark? can you not shark? can they not shark?	can I not be sharking? can you not be sharking? can he not be sharking? can we not be sharking? can you not be sharking? can they not be sharking?
Perfect	V-ing perfect
can I not have sharked? can you not have sharked? can he not have sharked? can we not have sharked? can you not have sharked? can they not have sharked?	can I not have been sharking? can you not have been sharking? can he not have been sharking? can we not have been sharking? can you not have been sharking? can they not have been sharking?