can underseal
Regular verb: underseal - undersealed- undersealed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can underseal
you can underseal
he can underseal
we can underseal
you can underseal
they can underseal 	I can be undersealing
you can be undersealing
he can be undersealing
we can be undersealing
you can be undersealing
they can be undersealing	I can have undersealed
you can have undersealed
he can have undersealed
we can have undersealed
you can have undersealed
they can have undersealed	I can have been undersealing
you can have been undersealing
he can have been undersealing
we can have been undersealing
you can have been undersealing
they can have been undersealing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't underseal
you can't underseal
he can't underseal
we can't underseal
you can't underseal
they can't underseal 	I can't be undersealing
you can't be undersealing
he can't be undersealing
we can't be undersealing
you can't be undersealing
they can't be undersealing	I can't have undersealed
you can't have undersealed
he can't have undersealed
we can't have undersealed
you can't have undersealed
they can't have undersealed	I can't have been undersealing
you can't have been undersealing
he can't have been undersealing
we can't have been undersealing
you can't have been undersealing
they can't have been undersealing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I underseal?
can you underseal?
can he underseal?
can we underseal?
can you underseal?
can they underseal? 	can I be undersealing?
can you be undersealing?
can he be undersealing?
can we be undersealing?
can you be undersealing?
can they be undersealing? 	can I have undersealed?
can you have undersealed?
can he have undersealed?
can we have undersealed?
can you have undersealed?
can they have undersealed? 	can I have been undersealing?
can you have been undersealing?
can he have been undersealing?
can we have been undersealing?
can you have been undersealing?
can they have been undersealing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I underseal?
can't you underseal?
can't he underseal?
can't we underseal?
can't you underseal?
can't they underseal? 	can't I be undersealing?
can't you be undersealing?
can't he be undersealing?
can't we be undersealing?
can't you be undersealing?
can't they be undersealing? 	can't I have undersealed?
can't you have undersealed?
can't he have undersealed?
can't we have undersealed?
can't you have undersealed?
can't they have undersealed? 	can't I have been undersealing?
can't you have been undersealing?
can't he have been undersealing?
can't we have been undersealing?
can't you have been undersealing?
can't they have been undersealing?