English verb conjugation
CAN COSTUME

Regular verb: costume - costumed - costumed

Affirmation

Simple form	V-ing form
I can costume you can costume he can costume we can costume you can costume they can costume	I can be costuming you can be costuming he can be costuming we can be costuming you can be costuming they can be costuming
Perfect	V-ing perfect
I can have costumed you can have costumed he can have costumed we can have costumed you can have costumed they can have costumed	I can have been costuming you can have been costuming he can have been costuming we can have been costuming you can have been costuming they can have been costuming

Negation

Simple form	V-ing form
I cannot costume you cannot costume he cannot costume we cannot costume you cannot costume they cannot costume	I cannot be costuming you cannot be costuming he cannot be costuming we cannot be costuming you cannot be costuming they cannot be costuming
Perfect	V-ing perfect
I cannot have costumed you cannot have costumed he cannot have costumed we cannot have costumed you cannot have costumed they cannot have costumed	I cannot have been costuming you cannot have been costuming he cannot have been costuming we cannot have been costuming you cannot have been costuming they cannot have been costuming

Interrogative form

Simple form	V-ing form
can I costume? can you costume? can he costume? can we costume? can you costume? can they costume?	can I be costuming? can you be costuming? can he be costuming? can we be costuming? can you be costuming? can they be costuming?
Perfect	V-ing perfect
can I have costumed? can you have costumed? can he have costumed? can we have costumed? can you have costumed? can they have costumed?	can I have been costuming? can you have been costuming? can he have been costuming? can we have been costuming? can you have been costuming? can they have been costuming?

Interro-negative form

Simple form	V-ing form
can I not costume? can you not costume? can he not costume? can we not costume? can you not costume? can they not costume?	can I not be costuming? can you not be costuming? can he not be costuming? can we not be costuming? can you not be costuming? can they not be costuming?
Perfect	V-ing perfect
can I not have costumed? can you not have costumed? can he not have costumed? can we not have costumed? can you not have costumed? can they not have costumed?	can I not have been costuming? can you not have been costuming? can he not have been costuming? can we not have been costuming? can you not have been costuming? can they not have been costuming?