could multiplex
Regular verb: multiplex - multiplexed- multiplexed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could multiplex
you could multiplex
he could multiplex
we could multiplex
you could multiplex
they could multiplex 	I could be multiplexing
you could be multiplexing
he could be multiplexing
we could be multiplexing
you could be multiplexing
they could be multiplexing	I could have multiplexed
you could have multiplexed
he could have multiplexed
we could have multiplexed
you could have multiplexed
they could have multiplexed	I could have been multiplexing
you could have been multiplexing
he could have been multiplexing
we could have been multiplexing
you could have been multiplexing
they could have been multiplexing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not multiplex
you could not multiplex
he could not multiplex
we could not multiplex
you could not multiplex
they could not multiplex 	I could not be multiplexing
you could not be multiplexing
he could not be multiplexing
we could not be multiplexing
you could not be multiplexing
they could not be multiplexing	I could not have multiplexed
you could not have multiplexed
he could not have multiplexed
we could not have multiplexed
you could not have multiplexed
they could not have multiplexed	I could not have been multiplexing
you could not have been multiplexing
he could not have been multiplexing
we could not have been multiplexing
you could not have been multiplexing
they could not have been multiplexing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I multiplex?
could you multiplex?
could he multiplex?
could we multiplex?
could you multiplex?
could they multiplex? 	could I be multiplexing?
could you be multiplexing?
could he be multiplexing?
could we be multiplexing?
could you be multiplexing?
could they be multiplexing? 	could I have multiplexed?
could you have multiplexed?
could he have multiplexed?
could we have multiplexed?
could you have multiplexed?
could they have multiplexed? 	could I have been multiplexing?
could you have been multiplexing?
could he have been multiplexing?
could we have been multiplexing?
could you have been multiplexing?
could they have been multiplexing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not multiplex?
could you not multiplex?
could he not multiplex?
could we not multiplex?
could you not multiplex?
could they not multiplex? 	could I not be multiplexing?
could you not be multiplexing?
could he not be multiplexing?
could we not be multiplexing?
could you not be multiplexing?
could they not be multiplexing? 	could I not have multiplexed?
could you not have multiplexed?
could he not have multiplexed?
could we not have multiplexed?
could you not have multiplexed?
could they not have multiplexed? 	could I not have been multiplexing?
could you not have been multiplexing?
could he not have been multiplexing?
could we not have been multiplexing?
could you not have been multiplexing?
could they not have been multiplexing?