English verb conjugation
CAN SPIKE

Regular verb: spike - spiked - spiked

Affirmation

Simple form	V-ing form
I can spike you can spike he can spike we can spike you can spike they can spike	I can be spiking you can be spiking he can be spiking we can be spiking you can be spiking they can be spiking
Perfect	V-ing perfect
I can have spiked you can have spiked he can have spiked we can have spiked you can have spiked they can have spiked	I can have been spiking you can have been spiking he can have been spiking we can have been spiking you can have been spiking they can have been spiking

Negation

Simple form	V-ing form
I can't spike you can't spike he can't spike we can't spike you can't spike they can't spike	I can't be spiking you can't be spiking he can't be spiking we can't be spiking you can't be spiking they can't be spiking
Perfect	V-ing perfect
I can't have spiked you can't have spiked he can't have spiked we can't have spiked you can't have spiked they can't have spiked	I can't have been spiking you can't have been spiking he can't have been spiking we can't have been spiking you can't have been spiking they can't have been spiking

Interrogative form

Simple form	V-ing form
can I spike? can you spike? can he spike? can we spike? can you spike? can they spike?	can I be spiking? can you be spiking? can he be spiking? can we be spiking? can you be spiking? can they be spiking?
Perfect	V-ing perfect
can I have spiked? can you have spiked? can he have spiked? can we have spiked? can you have spiked? can they have spiked?	can I have been spiking? can you have been spiking? can he have been spiking? can we have been spiking? can you have been spiking? can they have been spiking?

Interro-negative form

Simple form	V-ing form
can't I spike? can't you spike? can't he spike? can't we spike? can't you spike? can't they spike?	can't I be spiking? can't you be spiking? can't he be spiking? can't we be spiking? can't you be spiking? can't they be spiking?
Perfect	V-ing perfect
can't I have spiked? can't you have spiked? can't he have spiked? can't we have spiked? can't you have spiked? can't they have spiked?	can't I have been spiking? can't you have been spiking? can't he have been spiking? can't we have been spiking? can't you have been spiking? can't they have been spiking?