can caucus
Regular verb: caucus - caucused- caucused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can caucus
you can caucus
he can caucus
we can caucus
you can caucus
they can caucus 	I can be caucusing
you can be caucusing
he can be caucusing
we can be caucusing
you can be caucusing
they can be caucusing	I can have caucused
you can have caucused
he can have caucused
we can have caucused
you can have caucused
they can have caucused	I can have been caucusing
you can have been caucusing
he can have been caucusing
we can have been caucusing
you can have been caucusing
they can have been caucusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't caucus
you can't caucus
he can't caucus
we can't caucus
you can't caucus
they can't caucus 	I can't be caucusing
you can't be caucusing
he can't be caucusing
we can't be caucusing
you can't be caucusing
they can't be caucusing	I can't have caucused
you can't have caucused
he can't have caucused
we can't have caucused
you can't have caucused
they can't have caucused	I can't have been caucusing
you can't have been caucusing
he can't have been caucusing
we can't have been caucusing
you can't have been caucusing
they can't have been caucusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I caucus?
can you caucus?
can he caucus?
can we caucus?
can you caucus?
can they caucus? 	can I be caucusing?
can you be caucusing?
can he be caucusing?
can we be caucusing?
can you be caucusing?
can they be caucusing? 	can I have caucused?
can you have caucused?
can he have caucused?
can we have caucused?
can you have caucused?
can they have caucused? 	can I have been caucusing?
can you have been caucusing?
can he have been caucusing?
can we have been caucusing?
can you have been caucusing?
can they have been caucusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I caucus?
can't you caucus?
can't he caucus?
can't we caucus?
can't you caucus?
can't they caucus? 	can't I be caucusing?
can't you be caucusing?
can't he be caucusing?
can't we be caucusing?
can't you be caucusing?
can't they be caucusing? 	can't I have caucused?
can't you have caucused?
can't he have caucused?
can't we have caucused?
can't you have caucused?
can't they have caucused? 	can't I have been caucusing?
can't you have been caucusing?
can't he have been caucusing?
can't we have been caucusing?
can't you have been caucusing?
can't they have been caucusing?