can unclog
Regular verb: unclog - unclogged- unclogged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can unclog
you can unclog
he can unclog
we can unclog
you can unclog
they can unclog 	I can be unclogging
you can be unclogging
he can be unclogging
we can be unclogging
you can be unclogging
they can be unclogging	I can have unclogged
you can have unclogged
he can have unclogged
we can have unclogged
you can have unclogged
they can have unclogged	I can have been unclogging
you can have been unclogging
he can have been unclogging
we can have been unclogging
you can have been unclogging
they can have been unclogging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't unclog
you can't unclog
he can't unclog
we can't unclog
you can't unclog
they can't unclog 	I can't be unclogging
you can't be unclogging
he can't be unclogging
we can't be unclogging
you can't be unclogging
they can't be unclogging	I can't have unclogged
you can't have unclogged
he can't have unclogged
we can't have unclogged
you can't have unclogged
they can't have unclogged	I can't have been unclogging
you can't have been unclogging
he can't have been unclogging
we can't have been unclogging
you can't have been unclogging
they can't have been unclogging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I unclog?
can you unclog?
can he unclog?
can we unclog?
can you unclog?
can they unclog? 	can I be unclogging?
can you be unclogging?
can he be unclogging?
can we be unclogging?
can you be unclogging?
can they be unclogging? 	can I have unclogged?
can you have unclogged?
can he have unclogged?
can we have unclogged?
can you have unclogged?
can they have unclogged? 	can I have been unclogging?
can you have been unclogging?
can he have been unclogging?
can we have been unclogging?
can you have been unclogging?
can they have been unclogging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I unclog?
can't you unclog?
can't he unclog?
can't we unclog?
can't you unclog?
can't they unclog? 	can't I be unclogging?
can't you be unclogging?
can't he be unclogging?
can't we be unclogging?
can't you be unclogging?
can't they be unclogging? 	can't I have unclogged?
can't you have unclogged?
can't he have unclogged?
can't we have unclogged?
can't you have unclogged?
can't they have unclogged? 	can't I have been unclogging?
can't you have been unclogging?
can't he have been unclogging?
can't we have been unclogging?
can't you have been unclogging?
can't they have been unclogging?