English verb conjugation
CAN DIET

Regular verb: diet - dieted - dieted

Affirmation

Simple form	V-ing form
I can diet you can diet he can diet we can diet you can diet they can diet	I can be dieting you can be dieting he can be dieting we can be dieting you can be dieting they can be dieting
Perfect	V-ing perfect
I can have dieted you can have dieted he can have dieted we can have dieted you can have dieted they can have dieted	I can have been dieting you can have been dieting he can have been dieting we can have been dieting you can have been dieting they can have been dieting

Negation

Simple form	V-ing form
I cannot diet you cannot diet he cannot diet we cannot diet you cannot diet they cannot diet	I cannot be dieting you cannot be dieting he cannot be dieting we cannot be dieting you cannot be dieting they cannot be dieting
Perfect	V-ing perfect
I cannot have dieted you cannot have dieted he cannot have dieted we cannot have dieted you cannot have dieted they cannot have dieted	I cannot have been dieting you cannot have been dieting he cannot have been dieting we cannot have been dieting you cannot have been dieting they cannot have been dieting

Interrogative form

Simple form	V-ing form
can I diet? can you diet? can he diet? can we diet? can you diet? can they diet?	can I be dieting? can you be dieting? can he be dieting? can we be dieting? can you be dieting? can they be dieting?
Perfect	V-ing perfect
can I have dieted? can you have dieted? can he have dieted? can we have dieted? can you have dieted? can they have dieted?	can I have been dieting? can you have been dieting? can he have been dieting? can we have been dieting? can you have been dieting? can they have been dieting?

Interro-negative form

Simple form	V-ing form
can I not diet? can you not diet? can he not diet? can we not diet? can you not diet? can they not diet?	can I not be dieting? can you not be dieting? can he not be dieting? can we not be dieting? can you not be dieting? can they not be dieting?
Perfect	V-ing perfect
can I not have dieted? can you not have dieted? can he not have dieted? can we not have dieted? can you not have dieted? can they not have dieted?	can I not have been dieting? can you not have been dieting? can he not have been dieting? can we not have been dieting? can you not have been dieting? can they not have been dieting?