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 can't seal
you can't seal
she can't seal
we can't seal
you can't seal
they can't seal 	I can't be sealing
you can't be sealing
she can't be sealing
we can't be sealing
you can't be sealing
they can't be sealing	I can't have sealed
you can't have sealed
she can't have sealed
we can't have sealed
you can't have sealed
they can't have sealed	I can't have been sealing
you can't have been sealing
she can't have been sealing
we can't have been sealing
you can't have been sealing
they can't 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't I seal?
can't you seal?
can't she seal?
can't we seal?
can't you seal?
can't they seal? 	can't I be sealing?
can't you be sealing?
can't she be sealing?
can't we be sealing?
can't you be sealing?
can't they be sealing? 	can't I have sealed?
can't you have sealed?
can't she have sealed?
can't we have sealed?
can't you have sealed?
can't they have sealed? 	can't I have been sealing?
can't you have been sealing?
can't she have been sealing?
can't we have been sealing?
can't you have been sealing?
can't they have been sealing?