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 can't pretest you can't pretest he can't pretest we can't pretest you can't pretest they can't pretest	I can't be pretesting you can't be pretesting he can't be pretesting we can't be pretesting you can't be pretesting they can't be pretesting
Perfect	V-ing perfect
I can't have pretested you can't have pretested he can't have pretested we can't have pretested you can't have pretested they can't have pretested	I can't have been pretesting you can't have been pretesting he can't have been pretesting we can't have been pretesting you can't have been pretesting they can't 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't I pretest? can't you pretest? can't he pretest? can't we pretest? can't you pretest? can't they pretest?	can't I be pretesting? can't you be pretesting? can't he be pretesting? can't we be pretesting? can't you be pretesting? can't they be pretesting?
Perfect	V-ing perfect
can't I have pretested? can't you have pretested? can't he have pretested? can't we have pretested? can't you have pretested? can't they have pretested?	can't I have been pretesting? can't you have been pretesting? can't he have been pretesting? can't we have been pretesting? can't you have been pretesting? can't they have been pretesting?