shall impair
Regular verb: impair - impaired- impaired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll impair
you'll impair
he'll impair
we'll impair
you'll impair
they'll impair 	I'll be impairing
you'll be impairing
he'll be impairing
we'll be impairing
you'll be impairing
they'll be impairing	I'll have impaired
you'll have impaired
he'll have impaired
we'll have impaired
you'll have impaired
they'll have impaired	I'll have been impairing
you'll have been impairing
he'll have been impairing
we'll have been impairing
you'll have been impairing
they'll have been impairing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't impair
you shan't impair
he shan't impair
we shan't impair
you shan't impair
they shan't impair 	I shan't be impairing
you shan't be impairing
he shan't be impairing
we shan't be impairing
you shan't be impairing
they shan't be impairing	I shan't have impaired
you shan't have impaired
he shan't have impaired
we shan't have impaired
you shan't have impaired
they shan't have impaired	I shan't have been impairing
you shan't have been impairing
he shan't have been impairing
we shan't have been impairing
you shan't have been impairing
they shan't have been impairing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I impair?
shall you impair?
shall he impair?
shall we impair?
shall you impair?
shall they impair? 	shall I be impairing?
shall you be impairing?
shall he be impairing?
shall we be impairing?
shall you be impairing?
shall they be impairing? 	shall I have impaired?
shall you have impaired?
shall he have impaired?
shall we have impaired?
shall you have impaired?
shall they have impaired? 	shall I have been impairing?
shall you have been impairing?
shall he have been impairing?
shall we have been impairing?
shall you have been impairing?
shall they have been impairing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I impair?
shan't you impair?
shan't he impair?
shan't we impair?
shan't you impair?
shan't they impair? 	shan't I be impairing?
shan't you be impairing?
shan't he be impairing?
shan't we be impairing?
shan't you be impairing?
shan't they be impairing? 	shan't I have impaired?
shan't you have impaired?
shan't he have impaired?
shan't we have impaired?
shan't you have impaired?
shan't they have impaired? 	shan't I have been impairing?
shan't you have been impairing?
shan't he have been impairing?
shan't we have been impairing?
shan't you have been impairing?
shan't they have been impairing?