English verb conjugation
CAN UNDERPRODUCE

Regular verb: underproduce - underproduced - underproduced

Affirmation

Simple form	V-ing form
I can underproduce you can underproduce he can underproduce we can underproduce you can underproduce they can underproduce	I can be underproducing you can be underproducing he can be underproducing we can be underproducing you can be underproducing they can be underproducing
Perfect	V-ing perfect
I can have underproduced you can have underproduced he can have underproduced we can have underproduced you can have underproduced they can have underproduced	I can have been underproducing you can have been underproducing he can have been underproducing we can have been underproducing you can have been underproducing they can have been underproducing

Negation

Simple form	V-ing form
I can't underproduce you can't underproduce he can't underproduce we can't underproduce you can't underproduce they can't underproduce	I can't be underproducing you can't be underproducing he can't be underproducing we can't be underproducing you can't be underproducing they can't be underproducing
Perfect	V-ing perfect
I can't have underproduced you can't have underproduced he can't have underproduced we can't have underproduced you can't have underproduced they can't have underproduced	I can't have been underproducing you can't have been underproducing he can't have been underproducing we can't have been underproducing you can't have been underproducing they can't have been underproducing

Interrogative form

Simple form	V-ing form
can I underproduce? can you underproduce? can he underproduce? can we underproduce? can you underproduce? can they underproduce?	can I be underproducing? can you be underproducing? can he be underproducing? can we be underproducing? can you be underproducing? can they be underproducing?
Perfect	V-ing perfect
can I have underproduced? can you have underproduced? can he have underproduced? can we have underproduced? can you have underproduced? can they have underproduced?	can I have been underproducing? can you have been underproducing? can he have been underproducing? can we have been underproducing? can you have been underproducing? can they have been underproducing?

Interro-negative form

Simple form	V-ing form
can't I underproduce? can't you underproduce? can't he underproduce? can't we underproduce? can't you underproduce? can't they underproduce?	can't I be underproducing? can't you be underproducing? can't he be underproducing? can't we be underproducing? can't you be underproducing? can't they be underproducing?
Perfect	V-ing perfect
can't I have underproduced? can't you have underproduced? can't he have underproduced? can't we have underproduced? can't you have underproduced? can't they have underproduced?	can't I have been underproducing? can't you have been underproducing? can't he have been underproducing? can't we have been underproducing? can't you have been underproducing? can't they have been underproducing?