English verb conjugation
CAN SUBSTANTIATE

Regular verb: substantiate - substantiated - substantiated

Affirmation

Simple form	V-ing form
I can substantiate you can substantiate he can substantiate we can substantiate you can substantiate they can substantiate	I can be substantiating you can be substantiating he can be substantiating we can be substantiating you can be substantiating they can be substantiating
Perfect	V-ing perfect
I can have substantiated you can have substantiated he can have substantiated we can have substantiated you can have substantiated they can have substantiated	I can have been substantiating you can have been substantiating he can have been substantiating we can have been substantiating you can have been substantiating they can have been substantiating

Negation

Simple form	V-ing form
I cannot substantiate you cannot substantiate he cannot substantiate we cannot substantiate you cannot substantiate they cannot substantiate	I cannot be substantiating you cannot be substantiating he cannot be substantiating we cannot be substantiating you cannot be substantiating they cannot be substantiating
Perfect	V-ing perfect
I cannot have substantiated you cannot have substantiated he cannot have substantiated we cannot have substantiated you cannot have substantiated they cannot have substantiated	I cannot have been substantiating you cannot have been substantiating he cannot have been substantiating we cannot have been substantiating you cannot have been substantiating they cannot have been substantiating

Interrogative form

Simple form	V-ing form
can I substantiate? can you substantiate? can he substantiate? can we substantiate? can you substantiate? can they substantiate?	can I be substantiating? can you be substantiating? can he be substantiating? can we be substantiating? can you be substantiating? can they be substantiating?
Perfect	V-ing perfect
can I have substantiated? can you have substantiated? can he have substantiated? can we have substantiated? can you have substantiated? can they have substantiated?	can I have been substantiating? can you have been substantiating? can he have been substantiating? can we have been substantiating? can you have been substantiating? can they have been substantiating?

Interro-negative form

Simple form	V-ing form
can I not substantiate? can you not substantiate? can he not substantiate? can we not substantiate? can you not substantiate? can they not substantiate?	can I not be substantiating? can you not be substantiating? can he not be substantiating? can we not be substantiating? can you not be substantiating? can they not be substantiating?
Perfect	V-ing perfect
can I not have substantiated? can you not have substantiated? can he not have substantiated? can we not have substantiated? can you not have substantiated? can they not have substantiated?	can I not have been substantiating? can you not have been substantiating? can he not have been substantiating? can we not have been substantiating? can you not have been substantiating? can they not have been substantiating?