shall downshift
Regular verb: downshift - downshifted- downshifted

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

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

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

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