can sign
Verbo regolare: sign - signed- signed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can sign
you can sign
he can sign
we can sign
you can sign
they can sign 	I can be signing
you can be signing
he can be signing
we can be signing
you can be signing
they can be signing	I can have signed
you can have signed
he can have signed
we can have signed
you can have signed
they can have signed	I can have been signing
you can have been signing
he can have been signing
we can have been signing
you can have been signing
they can have been signing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can't sign
you can't sign
he can't sign
we can't sign
you can't sign
they can't sign 	I can't be signing
you can't be signing
he can't be signing
we can't be signing
you can't be signing
they can't be signing	I can't have signed
you can't have signed
he can't have signed
we can't have signed
you can't have signed
they can't have signed	I can't have been signing
you can't have been signing
he can't have been signing
we can't have been signing
you can't have been signing
they can't have been signing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I sign?
can you sign?
can he sign?
can we sign?
can you sign?
can they sign? 	can I be signing?
can you be signing?
can he be signing?
can we be signing?
can you be signing?
can they be signing? 	can I have signed?
can you have signed?
can he have signed?
can we have signed?
can you have signed?
can they have signed? 	can I have been signing?
can you have been signing?
can he have been signing?
can we have been signing?
can you have been signing?
can they have been signing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can't I sign?
can't you sign?
can't he sign?
can't we sign?
can't you sign?
can't they sign? 	can't I be signing?
can't you be signing?
can't he be signing?
can't we be signing?
can't you be signing?
can't they be signing? 	can't I have signed?
can't you have signed?
can't he have signed?
can't we have signed?
can't you have signed?
can't they have signed? 	can't I have been signing?
can't you have been signing?
can't he have been signing?
can't we have been signing?
can't you have been signing?
can't they have been signing?