English verb conjugation
CAN OVERESTIMATE

Regular verb: overestimate - overestimated - overestimated

Affirmation

Simple form	V-ing form
I can overestimate you can overestimate he can overestimate we can overestimate you can overestimate they can overestimate	I can be overestimating you can be overestimating he can be overestimating we can be overestimating you can be overestimating they can be overestimating
Perfect	V-ing perfect
I can have overestimated you can have overestimated he can have overestimated we can have overestimated you can have overestimated they can have overestimated	I can have been overestimating you can have been overestimating he can have been overestimating we can have been overestimating you can have been overestimating they can have been overestimating

Negation

Simple form	V-ing form
I can't overestimate you can't overestimate he can't overestimate we can't overestimate you can't overestimate they can't overestimate	I can't be overestimating you can't be overestimating he can't be overestimating we can't be overestimating you can't be overestimating they can't be overestimating
Perfect	V-ing perfect
I can't have overestimated you can't have overestimated he can't have overestimated we can't have overestimated you can't have overestimated they can't have overestimated	I can't have been overestimating you can't have been overestimating he can't have been overestimating we can't have been overestimating you can't have been overestimating they can't have been overestimating

Interrogative form

Simple form	V-ing form
can I overestimate? can you overestimate? can he overestimate? can we overestimate? can you overestimate? can they overestimate?	can I be overestimating? can you be overestimating? can he be overestimating? can we be overestimating? can you be overestimating? can they be overestimating?
Perfect	V-ing perfect
can I have overestimated? can you have overestimated? can he have overestimated? can we have overestimated? can you have overestimated? can they have overestimated?	can I have been overestimating? can you have been overestimating? can he have been overestimating? can we have been overestimating? can you have been overestimating? can they have been overestimating?

Interro-negative form

Simple form	V-ing form
can't I overestimate? can't you overestimate? can't he overestimate? can't we overestimate? can't you overestimate? can't they overestimate?	can't I be overestimating? can't you be overestimating? can't he be overestimating? can't we be overestimating? can't you be overestimating? can't they be overestimating?
Perfect	V-ing perfect
can't I have overestimated? can't you have overestimated? can't he have overestimated? can't we have overestimated? can't you have overestimated? can't they have overestimated?	can't I have been overestimating? can't you have been overestimating? can't he have been overestimating? can't we have been overestimating? can't you have been overestimating? can't they have been overestimating?