shall buttress
Regular verb: buttress - buttressed- buttressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll buttress
you'll buttress
she'll buttress
we'll buttress
you'll buttress
they'll buttress 	I'll be buttressing
you'll be buttressing
she'll be buttressing
we'll be buttressing
you'll be buttressing
they'll be buttressing	I'll have buttressed
you'll have buttressed
she'll have buttressed
we'll have buttressed
you'll have buttressed
they'll have buttressed	I'll have been buttressing
you'll have been buttressing
she'll have been buttressing
we'll have been buttressing
you'll have been buttressing
they'll have been buttressing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't buttress
you shan't buttress
she shan't buttress
we shan't buttress
you shan't buttress
they shan't buttress 	I shan't be buttressing
you shan't be buttressing
she shan't be buttressing
we shan't be buttressing
you shan't be buttressing
they shan't be buttressing	I shan't have buttressed
you shan't have buttressed
she shan't have buttressed
we shan't have buttressed
you shan't have buttressed
they shan't have buttressed	I shan't have been buttressing
you shan't have been buttressing
she shan't have been buttressing
we shan't have been buttressing
you shan't have been buttressing
they shan't have been buttressing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I buttress?
shall you buttress?
shall she buttress?
shall we buttress?
shall you buttress?
shall they buttress? 	shall I be buttressing?
shall you be buttressing?
shall she be buttressing?
shall we be buttressing?
shall you be buttressing?
shall they be buttressing? 	shall I have buttressed?
shall you have buttressed?
shall she have buttressed?
shall we have buttressed?
shall you have buttressed?
shall they have buttressed? 	shall I have been buttressing?
shall you have been buttressing?
shall she have been buttressing?
shall we have been buttressing?
shall you have been buttressing?
shall they have been buttressing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I buttress?
shan't you buttress?
shan't she buttress?
shan't we buttress?
shan't you buttress?
shan't they buttress? 	shan't I be buttressing?
shan't you be buttressing?
shan't she be buttressing?
shan't we be buttressing?
shan't you be buttressing?
shan't they be buttressing? 	shan't I have buttressed?
shan't you have buttressed?
shan't she have buttressed?
shan't we have buttressed?
shan't you have buttressed?
shan't they have buttressed? 	shan't I have been buttressing?
shan't you have been buttressing?
shan't she have been buttressing?
shan't we have been buttressing?
shan't you have been buttressing?
shan't they have been buttressing?