can upshift
Verbo regular: upshift - upshifted- upshifted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can upshift
you can upshift
he can upshift
we can upshift
you can upshift
they can upshift 	I can be upshifting
you can be upshifting
he can be upshifting
we can be upshifting
you can be upshifting
they can be upshifting	I can have upshifted
you can have upshifted
he can have upshifted
we can have upshifted
you can have upshifted
they can have upshifted	I can have been upshifting
you can have been upshifting
he can have been upshifting
we can have been upshifting
you can have been upshifting
they can have been upshifting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot upshift
you cannot upshift
he cannot upshift
we cannot upshift
you cannot upshift
they cannot upshift 	I cannot be upshifting
you cannot be upshifting
he cannot be upshifting
we cannot be upshifting
you cannot be upshifting
they cannot be upshifting	I cannot have upshifted
you cannot have upshifted
he cannot have upshifted
we cannot have upshifted
you cannot have upshifted
they cannot have upshifted	I cannot have been upshifting
you cannot have been upshifting
he cannot have been upshifting
we cannot have been upshifting
you cannot have been upshifting
they cannot have been upshifting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I upshift?
can you upshift?
can he upshift?
can we upshift?
can you upshift?
can they upshift? 	can I be upshifting?
can you be upshifting?
can he be upshifting?
can we be upshifting?
can you be upshifting?
can they be upshifting? 	can I have upshifted?
can you have upshifted?
can he have upshifted?
can we have upshifted?
can you have upshifted?
can they have upshifted? 	can I have been upshifting?
can you have been upshifting?
can he have been upshifting?
can we have been upshifting?
can you have been upshifting?
can they have been upshifting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not upshift?
can you not upshift?
can he not upshift?
can we not upshift?
can you not upshift?
can they not upshift? 	can I not be upshifting?
can you not be upshifting?
can he not be upshifting?
can we not be upshifting?
can you not be upshifting?
can they not be upshifting? 	can I not have upshifted?
can you not have upshifted?
can he not have upshifted?
can we not have upshifted?
can you not have upshifted?
can they not have upshifted? 	can I not have been upshifting?
can you not have been upshifting?
can he not have been upshifting?
can we not have been upshifting?
can you not have been upshifting?
can they not have been upshifting?