can disappear
Regular verb: disappear - disappeared- disappeared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can disappear
you can disappear
he can disappear
we can disappear
you can disappear
they can disappear 	I can be disappearing
you can be disappearing
he can be disappearing
we can be disappearing
you can be disappearing
they can be disappearing	I can have disappeared
you can have disappeared
he can have disappeared
we can have disappeared
you can have disappeared
they can have disappeared	I can have been disappearing
you can have been disappearing
he can have been disappearing
we can have been disappearing
you can have been disappearing
they can have been disappearing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot disappear
you cannot disappear
he cannot disappear
we cannot disappear
you cannot disappear
they cannot disappear 	I cannot be disappearing
you cannot be disappearing
he cannot be disappearing
we cannot be disappearing
you cannot be disappearing
they cannot be disappearing	I cannot have disappeared
you cannot have disappeared
he cannot have disappeared
we cannot have disappeared
you cannot have disappeared
they cannot have disappeared	I cannot have been disappearing
you cannot have been disappearing
he cannot have been disappearing
we cannot have been disappearing
you cannot have been disappearing
they cannot have been disappearing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I disappear?
can you disappear?
can he disappear?
can we disappear?
can you disappear?
can they disappear? 	can I be disappearing?
can you be disappearing?
can he be disappearing?
can we be disappearing?
can you be disappearing?
can they be disappearing? 	can I have disappeared?
can you have disappeared?
can he have disappeared?
can we have disappeared?
can you have disappeared?
can they have disappeared? 	can I have been disappearing?
can you have been disappearing?
can he have been disappearing?
can we have been disappearing?
can you have been disappearing?
can they have been disappearing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not disappear?
can you not disappear?
can he not disappear?
can we not disappear?
can you not disappear?
can they not disappear? 	can I not be disappearing?
can you not be disappearing?
can he not be disappearing?
can we not be disappearing?
can you not be disappearing?
can they not be disappearing? 	can I not have disappeared?
can you not have disappeared?
can he not have disappeared?
can we not have disappeared?
can you not have disappeared?
can they not have disappeared? 	can I not have been disappearing?
can you not have been disappearing?
can he not have been disappearing?
can we not have been disappearing?
can you not have been disappearing?
can they not have been disappearing?