English verb conjugation
CAN ATTAIN

Regular verb: attain - attained - attained

Affirmation

Simple form	V-ing form
I can attain you can attain she can attain we can attain you can attain they can attain	I can be attaining you can be attaining she can be attaining we can be attaining you can be attaining they can be attaining
Perfect	V-ing perfect
I can have attained you can have attained she can have attained we can have attained you can have attained they can have attained	I can have been attaining you can have been attaining she can have been attaining we can have been attaining you can have been attaining they can have been attaining

Negation

Simple form	V-ing form
I cannot attain you cannot attain she cannot attain we cannot attain you cannot attain they cannot attain	I cannot be attaining you cannot be attaining she cannot be attaining we cannot be attaining you cannot be attaining they cannot be attaining
Perfect	V-ing perfect
I cannot have attained you cannot have attained she cannot have attained we cannot have attained you cannot have attained they cannot have attained	I cannot have been attaining you cannot have been attaining she cannot have been attaining we cannot have been attaining you cannot have been attaining they cannot have been attaining

Interrogative form

Simple form	V-ing form
can I attain? can you attain? can she attain? can we attain? can you attain? can they attain?	can I be attaining? can you be attaining? can she be attaining? can we be attaining? can you be attaining? can they be attaining?
Perfect	V-ing perfect
can I have attained? can you have attained? can she have attained? can we have attained? can you have attained? can they have attained?	can I have been attaining? can you have been attaining? can she have been attaining? can we have been attaining? can you have been attaining? can they have been attaining?

Interro-negative form

Simple form	V-ing form
can I not attain? can you not attain? can she not attain? can we not attain? can you not attain? can they not attain?	can I not be attaining? can you not be attaining? can she not be attaining? can we not be attaining? can you not be attaining? can they not be attaining?
Perfect	V-ing perfect
can I not have attained? can you not have attained? can she not have attained? can we not have attained? can you not have attained? can they not have attained?	can I not have been attaining? can you not have been attaining? can she not have been attaining? can we not have been attaining? can you not have been attaining? can they not have been attaining?