can seal
Regular verb: seal - sealed- sealed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can seal
you can seal
she can seal
we can seal
you can seal
they can seal 	I can be sealing
you can be sealing
she can be sealing
we can be sealing
you can be sealing
they can be sealing	I can have sealed
you can have sealed
she can have sealed
we can have sealed
you can have sealed
they can have sealed	I can have been sealing
you can have been sealing
she can have been sealing
we can have been sealing
you can have been sealing
they can have been sealing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot seal
you cannot seal
she cannot seal
we cannot seal
you cannot seal
they cannot seal 	I cannot be sealing
you cannot be sealing
she cannot be sealing
we cannot be sealing
you cannot be sealing
they cannot be sealing	I cannot have sealed
you cannot have sealed
she cannot have sealed
we cannot have sealed
you cannot have sealed
they cannot have sealed	I cannot have been sealing
you cannot have been sealing
she cannot have been sealing
we cannot have been sealing
you cannot have been sealing
they cannot have been sealing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I seal?
can you seal?
can she seal?
can we seal?
can you seal?
can they seal? 	can I be sealing?
can you be sealing?
can she be sealing?
can we be sealing?
can you be sealing?
can they be sealing? 	can I have sealed?
can you have sealed?
can she have sealed?
can we have sealed?
can you have sealed?
can they have sealed? 	can I have been sealing?
can you have been sealing?
can she have been sealing?
can we have been sealing?
can you have been sealing?
can they have been sealing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not seal?
can you not seal?
can she not seal?
can we not seal?
can you not seal?
can they not seal? 	can I not be sealing?
can you not be sealing?
can she not be sealing?
can we not be sealing?
can you not be sealing?
can they not be sealing? 	can I not have sealed?
can you not have sealed?
can she not have sealed?
can we not have sealed?
can you not have sealed?
can they not have sealed? 	can I not have been sealing?
can you not have been sealing?
can she not have been sealing?
can we not have been sealing?
can you not have been sealing?
can they not have been sealing?