shall subtend
Regular verb: subtend - subtended- subtended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll subtend
you'll subtend
she'll subtend
we'll subtend
you'll subtend
they'll subtend 	I'll be subtending
you'll be subtending
she'll be subtending
we'll be subtending
you'll be subtending
they'll be subtending	I'll have subtended
you'll have subtended
she'll have subtended
we'll have subtended
you'll have subtended
they'll have subtended	I'll have been subtending
you'll have been subtending
she'll have been subtending
we'll have been subtending
you'll have been subtending
they'll have been subtending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't subtend
you shan't subtend
she shan't subtend
we shan't subtend
you shan't subtend
they shan't subtend 	I shan't be subtending
you shan't be subtending
she shan't be subtending
we shan't be subtending
you shan't be subtending
they shan't be subtending	I shan't have subtended
you shan't have subtended
she shan't have subtended
we shan't have subtended
you shan't have subtended
they shan't have subtended	I shan't have been subtending
you shan't have been subtending
she shan't have been subtending
we shan't have been subtending
you shan't have been subtending
they shan't have been subtending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I subtend?
shall you subtend?
shall she subtend?
shall we subtend?
shall you subtend?
shall they subtend? 	shall I be subtending?
shall you be subtending?
shall she be subtending?
shall we be subtending?
shall you be subtending?
shall they be subtending? 	shall I have subtended?
shall you have subtended?
shall she have subtended?
shall we have subtended?
shall you have subtended?
shall they have subtended? 	shall I have been subtending?
shall you have been subtending?
shall she have been subtending?
shall we have been subtending?
shall you have been subtending?
shall they have been subtending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I subtend?
shan't you subtend?
shan't she subtend?
shan't we subtend?
shan't you subtend?
shan't they subtend? 	shan't I be subtending?
shan't you be subtending?
shan't she be subtending?
shan't we be subtending?
shan't you be subtending?
shan't they be subtending? 	shan't I have subtended?
shan't you have subtended?
shan't she have subtended?
shan't we have subtended?
shan't you have subtended?
shan't they have subtended? 	shan't I have been subtending?
shan't you have been subtending?
shan't she have been subtending?
shan't we have been subtending?
shan't you have been subtending?
shan't they have been subtending?