can sightsee
Verbo regular: sightsee - sightseed- sightseed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can sightsee
you can sightsee
she can sightsee
we can sightsee
you can sightsee
they can sightsee 	I can be sightseeing
you can be sightseeing
she can be sightseeing
we can be sightseeing
you can be sightseeing
they can be sightseeing	I can have sightseed
you can have sightseed
she can have sightseed
we can have sightseed
you can have sightseed
they can have sightseed	I can have been sightseeing
you can have been sightseeing
she can have been sightseeing
we can have been sightseeing
you can have been sightseeing
they can have been sightseeing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot sightsee
you cannot sightsee
she cannot sightsee
we cannot sightsee
you cannot sightsee
they cannot sightsee 	I cannot be sightseeing
you cannot be sightseeing
she cannot be sightseeing
we cannot be sightseeing
you cannot be sightseeing
they cannot be sightseeing	I cannot have sightseed
you cannot have sightseed
she cannot have sightseed
we cannot have sightseed
you cannot have sightseed
they cannot have sightseed	I cannot have been sightseeing
you cannot have been sightseeing
she cannot have been sightseeing
we cannot have been sightseeing
you cannot have been sightseeing
they cannot have been sightseeing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I sightsee?
can you sightsee?
can she sightsee?
can we sightsee?
can you sightsee?
can they sightsee? 	can I be sightseeing?
can you be sightseeing?
can she be sightseeing?
can we be sightseeing?
can you be sightseeing?
can they be sightseeing? 	can I have sightseed?
can you have sightseed?
can she have sightseed?
can we have sightseed?
can you have sightseed?
can they have sightseed? 	can I have been sightseeing?
can you have been sightseeing?
can she have been sightseeing?
can we have been sightseeing?
can you have been sightseeing?
can they have been sightseeing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not sightsee?
can you not sightsee?
can she not sightsee?
can we not sightsee?
can you not sightsee?
can they not sightsee? 	can I not be sightseeing?
can you not be sightseeing?
can she not be sightseeing?
can we not be sightseeing?
can you not be sightseeing?
can they not be sightseeing? 	can I not have sightseed?
can you not have sightseed?
can she not have sightseed?
can we not have sightseed?
can you not have sightseed?
can they not have sightseed? 	can I not have been sightseeing?
can you not have been sightseeing?
can she not have been sightseeing?
can we not have been sightseeing?
can you not have been sightseeing?
can they not have been sightseeing?