shall investigate
Regular verb: investigate - investigated- investigated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall investigate
you shall investigate
he shall investigate
we shall investigate
you shall investigate
they shall investigate 	I shall be investigating
you shall be investigating
he shall be investigating
we shall be investigating
you shall be investigating
they shall be investigating	I shall have investigated
you shall have investigated
he shall have investigated
we shall have investigated
you shall have investigated
they shall have investigated	I shall have been investigating
you shall have been investigating
he shall have been investigating
we shall have been investigating
you shall have been investigating
they shall have been investigating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shall not investigate
you shall not investigate
he shall not investigate
we shall not investigate
you shall not investigate
they shall not investigate 	I shall not be investigating
you shall not be investigating
he shall not be investigating
we shall not be investigating
you shall not be investigating
they shall not be investigating	I shall not have investigated
you shall not have investigated
he shall not have investigated
we shall not have investigated
you shall not have investigated
they shall not have investigated	I shall not have been investigating
you shall not have been investigating
he shall not have been investigating
we shall not have been investigating
you shall not have been investigating
they shall not have been investigating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I investigate?
shall you investigate?
shall he investigate?
shall we investigate?
shall you investigate?
shall they investigate? 	shall I be investigating?
shall you be investigating?
shall he be investigating?
shall we be investigating?
shall you be investigating?
shall they be investigating? 	shall I have investigated?
shall you have investigated?
shall he have investigated?
shall we have investigated?
shall you have investigated?
shall they have investigated? 	shall I have been investigating?
shall you have been investigating?
shall he have been investigating?
shall we have been investigating?
shall you have been investigating?
shall they have been investigating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I not investigate?
shall you not investigate?
shall he not investigate?
shall we not investigate?
shall you not investigate?
shall they not investigate? 	shall I not be investigating?
shall you not be investigating?
shall he not be investigating?
shall we not be investigating?
shall you not be investigating?
shall they not be investigating? 	shall I not have investigated?
shall you not have investigated?
shall he not have investigated?
shall we not have investigated?
shall you not have investigated?
shall they not have investigated? 	shall I not have been investigating?
shall you not have been investigating?
shall he not have been investigating?
shall we not have been investigating?
shall you not have been investigating?
shall they not have been investigating?