can unlatch
Regular verb: unlatch - unlatched- unlatched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can unlatch
you can unlatch
he can unlatch
we can unlatch
you can unlatch
they can unlatch 	I can be unlatching
you can be unlatching
he can be unlatching
we can be unlatching
you can be unlatching
they can be unlatching	I can have unlatched
you can have unlatched
he can have unlatched
we can have unlatched
you can have unlatched
they can have unlatched	I can have been unlatching
you can have been unlatching
he can have been unlatching
we can have been unlatching
you can have been unlatching
they can have been unlatching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot unlatch
you cannot unlatch
he cannot unlatch
we cannot unlatch
you cannot unlatch
they cannot unlatch 	I cannot be unlatching
you cannot be unlatching
he cannot be unlatching
we cannot be unlatching
you cannot be unlatching
they cannot be unlatching	I cannot have unlatched
you cannot have unlatched
he cannot have unlatched
we cannot have unlatched
you cannot have unlatched
they cannot have unlatched	I cannot have been unlatching
you cannot have been unlatching
he cannot have been unlatching
we cannot have been unlatching
you cannot have been unlatching
they cannot have been unlatching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I unlatch?
can you unlatch?
can he unlatch?
can we unlatch?
can you unlatch?
can they unlatch? 	can I be unlatching?
can you be unlatching?
can he be unlatching?
can we be unlatching?
can you be unlatching?
can they be unlatching? 	can I have unlatched?
can you have unlatched?
can he have unlatched?
can we have unlatched?
can you have unlatched?
can they have unlatched? 	can I have been unlatching?
can you have been unlatching?
can he have been unlatching?
can we have been unlatching?
can you have been unlatching?
can they have been unlatching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not unlatch?
can you not unlatch?
can he not unlatch?
can we not unlatch?
can you not unlatch?
can they not unlatch? 	can I not be unlatching?
can you not be unlatching?
can he not be unlatching?
can we not be unlatching?
can you not be unlatching?
can they not be unlatching? 	can I not have unlatched?
can you not have unlatched?
can he not have unlatched?
can we not have unlatched?
can you not have unlatched?
can they not have unlatched? 	can I not have been unlatching?
can you not have been unlatching?
can he not have been unlatching?
can we not have been unlatching?
can you not have been unlatching?
can they not have been unlatching?