English verb conjugation
CAN CRUST

Regular verb: crust - crusted - crusted

Affirmation

Simple form	V-ing form
I can crust you can crust he can crust we can crust you can crust they can crust	I can be crusting you can be crusting he can be crusting we can be crusting you can be crusting they can be crusting
Perfect	V-ing perfect
I can have crusted you can have crusted he can have crusted we can have crusted you can have crusted they can have crusted	I can have been crusting you can have been crusting he can have been crusting we can have been crusting you can have been crusting they can have been crusting

Negation

Simple form	V-ing form
I cannot crust you cannot crust he cannot crust we cannot crust you cannot crust they cannot crust	I cannot be crusting you cannot be crusting he cannot be crusting we cannot be crusting you cannot be crusting they cannot be crusting
Perfect	V-ing perfect
I cannot have crusted you cannot have crusted he cannot have crusted we cannot have crusted you cannot have crusted they cannot have crusted	I cannot have been crusting you cannot have been crusting he cannot have been crusting we cannot have been crusting you cannot have been crusting they cannot have been crusting

Interrogative form

Simple form	V-ing form
can I crust? can you crust? can he crust? can we crust? can you crust? can they crust?	can I be crusting? can you be crusting? can he be crusting? can we be crusting? can you be crusting? can they be crusting?
Perfect	V-ing perfect
can I have crusted? can you have crusted? can he have crusted? can we have crusted? can you have crusted? can they have crusted?	can I have been crusting? can you have been crusting? can he have been crusting? can we have been crusting? can you have been crusting? can they have been crusting?

Interro-negative form

Simple form	V-ing form
can I not crust? can you not crust? can he not crust? can we not crust? can you not crust? can they not crust?	can I not be crusting? can you not be crusting? can he not be crusting? can we not be crusting? can you not be crusting? can they not be crusting?
Perfect	V-ing perfect
can I not have crusted? can you not have crusted? can he not have crusted? can we not have crusted? can you not have crusted? can they not have crusted?	can I not have been crusting? can you not have been crusting? can he not have been crusting? can we not have been crusting? can you not have been crusting? can they not have been crusting?