can downshift
Regular verb: downshift - downshifted- downshifted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can downshift
you can downshift
he can downshift
we can downshift
you can downshift
they can downshift 	I can be downshifting
you can be downshifting
he can be downshifting
we can be downshifting
you can be downshifting
they can be downshifting	I can have downshifted
you can have downshifted
he can have downshifted
we can have downshifted
you can have downshifted
they can have downshifted	I can have been downshifting
you can have been downshifting
he can have been downshifting
we can have been downshifting
you can have been downshifting
they can have been downshifting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot downshift
you cannot downshift
he cannot downshift
we cannot downshift
you cannot downshift
they cannot downshift 	I cannot be downshifting
you cannot be downshifting
he cannot be downshifting
we cannot be downshifting
you cannot be downshifting
they cannot be downshifting	I cannot have downshifted
you cannot have downshifted
he cannot have downshifted
we cannot have downshifted
you cannot have downshifted
they cannot have downshifted	I cannot have been downshifting
you cannot have been downshifting
he cannot have been downshifting
we cannot have been downshifting
you cannot have been downshifting
they cannot have been downshifting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I downshift?
can you downshift?
can he downshift?
can we downshift?
can you downshift?
can they downshift? 	can I be downshifting?
can you be downshifting?
can he be downshifting?
can we be downshifting?
can you be downshifting?
can they be downshifting? 	can I have downshifted?
can you have downshifted?
can he have downshifted?
can we have downshifted?
can you have downshifted?
can they have downshifted? 	can I have been downshifting?
can you have been downshifting?
can he have been downshifting?
can we have been downshifting?
can you have been downshifting?
can they have been downshifting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not downshift?
can you not downshift?
can he not downshift?
can we not downshift?
can you not downshift?
can they not downshift? 	can I not be downshifting?
can you not be downshifting?
can he not be downshifting?
can we not be downshifting?
can you not be downshifting?
can they not be downshifting? 	can I not have downshifted?
can you not have downshifted?
can he not have downshifted?
can we not have downshifted?
can you not have downshifted?
can they not have downshifted? 	can I not have been downshifting?
can you not have been downshifting?
can he not have been downshifting?
can we not have been downshifting?
can you not have been downshifting?
can they not have been downshifting?