shall combust
Regular verb: combust - combusted- combusted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll combust
you'll combust
he'll combust
we'll combust
you'll combust
they'll combust 	I'll be combusting
you'll be combusting
he'll be combusting
we'll be combusting
you'll be combusting
they'll be combusting	I'll have combusted
you'll have combusted
he'll have combusted
we'll have combusted
you'll have combusted
they'll have combusted	I'll have been combusting
you'll have been combusting
he'll have been combusting
we'll have been combusting
you'll have been combusting
they'll have been combusting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't combust
you shan't combust
he shan't combust
we shan't combust
you shan't combust
they shan't combust 	I shan't be combusting
you shan't be combusting
he shan't be combusting
we shan't be combusting
you shan't be combusting
they shan't be combusting	I shan't have combusted
you shan't have combusted
he shan't have combusted
we shan't have combusted
you shan't have combusted
they shan't have combusted	I shan't have been combusting
you shan't have been combusting
he shan't have been combusting
we shan't have been combusting
you shan't have been combusting
they shan't have been combusting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I combust?
shall you combust?
shall he combust?
shall we combust?
shall you combust?
shall they combust? 	shall I be combusting?
shall you be combusting?
shall he be combusting?
shall we be combusting?
shall you be combusting?
shall they be combusting? 	shall I have combusted?
shall you have combusted?
shall he have combusted?
shall we have combusted?
shall you have combusted?
shall they have combusted? 	shall I have been combusting?
shall you have been combusting?
shall he have been combusting?
shall we have been combusting?
shall you have been combusting?
shall they have been combusting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I combust?
shan't you combust?
shan't he combust?
shan't we combust?
shan't you combust?
shan't they combust? 	shan't I be combusting?
shan't you be combusting?
shan't he be combusting?
shan't we be combusting?
shan't you be combusting?
shan't they be combusting? 	shan't I have combusted?
shan't you have combusted?
shan't he have combusted?
shan't we have combusted?
shan't you have combusted?
shan't they have combusted? 	shan't I have been combusting?
shan't you have been combusting?
shan't he have been combusting?
shan't we have been combusting?
shan't you have been combusting?
shan't they have been combusting?