English verb conjugation
CAN RETEST

Regular verb: retest - retested - retested

Affirmation

Simple form	V-ing form
I can retest you can retest she can retest we can retest you can retest they can retest	I can be retesting you can be retesting she can be retesting we can be retesting you can be retesting they can be retesting
Perfect	V-ing perfect
I can have retested you can have retested she can have retested we can have retested you can have retested they can have retested	I can have been retesting you can have been retesting she can have been retesting we can have been retesting you can have been retesting they can have been retesting

Negation

Simple form	V-ing form
I cannot retest you cannot retest she cannot retest we cannot retest you cannot retest they cannot retest	I cannot be retesting you cannot be retesting she cannot be retesting we cannot be retesting you cannot be retesting they cannot be retesting
Perfect	V-ing perfect
I cannot have retested you cannot have retested she cannot have retested we cannot have retested you cannot have retested they cannot have retested	I cannot have been retesting you cannot have been retesting she cannot have been retesting we cannot have been retesting you cannot have been retesting they cannot have been retesting

Interrogative form

Simple form	V-ing form
can I retest? can you retest? can she retest? can we retest? can you retest? can they retest?	can I be retesting? can you be retesting? can she be retesting? can we be retesting? can you be retesting? can they be retesting?
Perfect	V-ing perfect
can I have retested? can you have retested? can she have retested? can we have retested? can you have retested? can they have retested?	can I have been retesting? can you have been retesting? can she have been retesting? can we have been retesting? can you have been retesting? can they have been retesting?

Interro-negative form

Simple form	V-ing form
can I not retest? can you not retest? can she not retest? can we not retest? can you not retest? can they not retest?	can I not be retesting? can you not be retesting? can she not be retesting? can we not be retesting? can you not be retesting? can they not be retesting?
Perfect	V-ing perfect
can I not have retested? can you not have retested? can she not have retested? can we not have retested? can you not have retested? can they not have retested?	can I not have been retesting? can you not have been retesting? can she not have been retesting? can we not have been retesting? can you not have been retesting? can they not have been retesting?