can retrofit
Irregular verb: retrofit - retrofit- retrofit

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can retrofit
you can retrofit
he can retrofit
we can retrofit
you can retrofit
they can retrofit 	I can be retrofiting
you can be retrofiting
he can be retrofiting
we can be retrofiting
you can be retrofiting
they can be retrofiting	I can have retrofit
you can have retrofit
he can have retrofit
we can have retrofit
you can have retrofit
they can have retrofit	I can have been retrofiting
you can have been retrofiting
he can have been retrofiting
we can have been retrofiting
you can have been retrofiting
they can have been retrofiting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't retrofit
you can't retrofit
he can't retrofit
we can't retrofit
you can't retrofit
they can't retrofit 	I can't be retrofiting
you can't be retrofiting
he can't be retrofiting
we can't be retrofiting
you can't be retrofiting
they can't be retrofiting	I can't have retrofit
you can't have retrofit
he can't have retrofit
we can't have retrofit
you can't have retrofit
they can't have retrofit	I can't have been retrofiting
you can't have been retrofiting
he can't have been retrofiting
we can't have been retrofiting
you can't have been retrofiting
they can't have been retrofiting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I retrofit?
can you retrofit?
can he retrofit?
can we retrofit?
can you retrofit?
can they retrofit? 	can I be retrofiting?
can you be retrofiting?
can he be retrofiting?
can we be retrofiting?
can you be retrofiting?
can they be retrofiting? 	can I have retrofit?
can you have retrofit?
can he have retrofit?
can we have retrofit?
can you have retrofit?
can they have retrofit? 	can I have been retrofiting?
can you have been retrofiting?
can he have been retrofiting?
can we have been retrofiting?
can you have been retrofiting?
can they have been retrofiting? 	

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