English verb conjugation
CAN PRETEST

Regular verb: pretest - pretested - pretested

Affirmation

Simple form	V-ing form
I can pretest you can pretest he can pretest we can pretest you can pretest they can pretest	I can be pretesting you can be pretesting he can be pretesting we can be pretesting you can be pretesting they can be pretesting
Perfect	V-ing perfect
I can have pretested you can have pretested he can have pretested we can have pretested you can have pretested they can have pretested	I can have been pretesting you can have been pretesting he can have been pretesting we can have been pretesting you can have been pretesting they can have been pretesting

Negation

Simple form	V-ing form
I cannot pretest you cannot pretest he cannot pretest we cannot pretest you cannot pretest they cannot pretest	I cannot be pretesting you cannot be pretesting he cannot be pretesting we cannot be pretesting you cannot be pretesting they cannot be pretesting
Perfect	V-ing perfect
I cannot have pretested you cannot have pretested he cannot have pretested we cannot have pretested you cannot have pretested they cannot have pretested	I cannot have been pretesting you cannot have been pretesting he cannot have been pretesting we cannot have been pretesting you cannot have been pretesting they cannot have been pretesting

Interrogative form

Simple form	V-ing form
can I pretest? can you pretest? can he pretest? can we pretest? can you pretest? can they pretest?	can I be pretesting? can you be pretesting? can he be pretesting? can we be pretesting? can you be pretesting? can they be pretesting?
Perfect	V-ing perfect
can I have pretested? can you have pretested? can he have pretested? can we have pretested? can you have pretested? can they have pretested?	can I have been pretesting? can you have been pretesting? can he have been pretesting? can we have been pretesting? can you have been pretesting? can they have been pretesting?

Interro-negative form

Simple form	V-ing form
can I not pretest? can you not pretest? can he not pretest? can we not pretest? can you not pretest? can they not pretest?	can I not be pretesting? can you not be pretesting? can he not be pretesting? can we not be pretesting? can you not be pretesting? can they not be pretesting?
Perfect	V-ing perfect
can I not have pretested? can you not have pretested? can he not have pretested? can we not have pretested? can you not have pretested? can they not have pretested?	can I not have been pretesting? can you not have been pretesting? can he not have been pretesting? can we not have been pretesting? can you not have been pretesting? can they not have been pretesting?