can invest
Regular verb: invest - invested- invested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can invest
you can invest
he can invest
we can invest
you can invest
they can invest 	I can be investing
you can be investing
he can be investing
we can be investing
you can be investing
they can be investing	I can have invested
you can have invested
he can have invested
we can have invested
you can have invested
they can have invested	I can have been investing
you can have been investing
he can have been investing
we can have been investing
you can have been investing
they can have been investing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot invest
you cannot invest
he cannot invest
we cannot invest
you cannot invest
they cannot invest 	I cannot be investing
you cannot be investing
he cannot be investing
we cannot be investing
you cannot be investing
they cannot be investing	I cannot have invested
you cannot have invested
he cannot have invested
we cannot have invested
you cannot have invested
they cannot have invested	I cannot have been investing
you cannot have been investing
he cannot have been investing
we cannot have been investing
you cannot have been investing
they cannot have been investing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I invest?
can you invest?
can he invest?
can we invest?
can you invest?
can they invest? 	can I be investing?
can you be investing?
can he be investing?
can we be investing?
can you be investing?
can they be investing? 	can I have invested?
can you have invested?
can he have invested?
can we have invested?
can you have invested?
can they have invested? 	can I have been investing?
can you have been investing?
can he have been investing?
can we have been investing?
can you have been investing?
can they have been investing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not invest?
can you not invest?
can he not invest?
can we not invest?
can you not invest?
can they not invest? 	can I not be investing?
can you not be investing?
can he not be investing?
can we not be investing?
can you not be investing?
can they not be investing? 	can I not have invested?
can you not have invested?
can he not have invested?
can we not have invested?
can you not have invested?
can they not have invested? 	can I not have been investing?
can you not have been investing?
can he not have been investing?
can we not have been investing?
can you not have been investing?
can they not have been investing?