shall excogitate
Regular verb: excogitate - excogitated- excogitated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll excogitate
you'll excogitate
he'll excogitate
we'll excogitate
you'll excogitate
they'll excogitate 	I'll be excogitating
you'll be excogitating
he'll be excogitating
we'll be excogitating
you'll be excogitating
they'll be excogitating	I'll have excogitated
you'll have excogitated
he'll have excogitated
we'll have excogitated
you'll have excogitated
they'll have excogitated	I'll have been excogitating
you'll have been excogitating
he'll have been excogitating
we'll have been excogitating
you'll have been excogitating
they'll have been excogitating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't excogitate
you shan't excogitate
he shan't excogitate
we shan't excogitate
you shan't excogitate
they shan't excogitate 	I shan't be excogitating
you shan't be excogitating
he shan't be excogitating
we shan't be excogitating
you shan't be excogitating
they shan't be excogitating	I shan't have excogitated
you shan't have excogitated
he shan't have excogitated
we shan't have excogitated
you shan't have excogitated
they shan't have excogitated	I shan't have been excogitating
you shan't have been excogitating
he shan't have been excogitating
we shan't have been excogitating
you shan't have been excogitating
they shan't have been excogitating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I excogitate?
shall you excogitate?
shall he excogitate?
shall we excogitate?
shall you excogitate?
shall they excogitate? 	shall I be excogitating?
shall you be excogitating?
shall he be excogitating?
shall we be excogitating?
shall you be excogitating?
shall they be excogitating? 	shall I have excogitated?
shall you have excogitated?
shall he have excogitated?
shall we have excogitated?
shall you have excogitated?
shall they have excogitated? 	shall I have been excogitating?
shall you have been excogitating?
shall he have been excogitating?
shall we have been excogitating?
shall you have been excogitating?
shall they have been excogitating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I excogitate?
shan't you excogitate?
shan't he excogitate?
shan't we excogitate?
shan't you excogitate?
shan't they excogitate? 	shan't I be excogitating?
shan't you be excogitating?
shan't he be excogitating?
shan't we be excogitating?
shan't you be excogitating?
shan't they be excogitating? 	shan't I have excogitated?
shan't you have excogitated?
shan't he have excogitated?
shan't we have excogitated?
shan't you have excogitated?
shan't they have excogitated? 	shan't I have been excogitating?
shan't you have been excogitating?
shan't he have been excogitating?
shan't we have been excogitating?
shan't you have been excogitating?
shan't they have been excogitating?