can upshift
Regular verb: upshift - upshifted- upshifted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't upshift
you can't upshift
he can't upshift
we can't upshift
you can't upshift
they can't upshift 	I can't be upshifting
you can't be upshifting
he can't be upshifting
we can't be upshifting
you can't be upshifting
they can't be upshifting	I can't have upshifted
you can't have upshifted
he can't have upshifted
we can't have upshifted
you can't have upshifted
they can't have upshifted	I can't have been upshifting
you can't have been upshifting
he can't have been upshifting
we can't have been upshifting
you can't have been upshifting
they can't have been upshifting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

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