English verb conjugation
CAN TILLER

Regular verb: tiller - tillered - tillered

Affirmation

Simple form	V-ing form
I can tiller you can tiller he can tiller we can tiller you can tiller they can tiller	I can be tillering you can be tillering he can be tillering we can be tillering you can be tillering they can be tillering
Perfect	V-ing perfect
I can have tillered you can have tillered he can have tillered we can have tillered you can have tillered they can have tillered	I can have been tillering you can have been tillering he can have been tillering we can have been tillering you can have been tillering they can have been tillering

Negation

Simple form	V-ing form
I can't tiller you can't tiller he can't tiller we can't tiller you can't tiller they can't tiller	I can't be tillering you can't be tillering he can't be tillering we can't be tillering you can't be tillering they can't be tillering
Perfect	V-ing perfect
I can't have tillered you can't have tillered he can't have tillered we can't have tillered you can't have tillered they can't have tillered	I can't have been tillering you can't have been tillering he can't have been tillering we can't have been tillering you can't have been tillering they can't have been tillering

Interrogative form

Simple form	V-ing form
can I tiller? can you tiller? can he tiller? can we tiller? can you tiller? can they tiller?	can I be tillering? can you be tillering? can he be tillering? can we be tillering? can you be tillering? can they be tillering?
Perfect	V-ing perfect
can I have tillered? can you have tillered? can he have tillered? can we have tillered? can you have tillered? can they have tillered?	can I have been tillering? can you have been tillering? can he have been tillering? can we have been tillering? can you have been tillering? can they have been tillering?

Interro-negative form

Simple form	V-ing form
can't I tiller? can't you tiller? can't he tiller? can't we tiller? can't you tiller? can't they tiller?	can't I be tillering? can't you be tillering? can't he be tillering? can't we be tillering? can't you be tillering? can't they be tillering?
Perfect	V-ing perfect
can't I have tillered? can't you have tillered? can't he have tillered? can't we have tillered? can't you have tillered? can't they have tillered?	can't I have been tillering? can't you have been tillering? can't he have been tillering? can't we have been tillering? can't you have been tillering? can't they have been tillering?