shall countersink
Irregular verb: countersink - countersank- countersunk

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll countersink
you'll countersink
he'll countersink
we'll countersink
you'll countersink
they'll countersink 	I'll be countersinking
you'll be countersinking
he'll be countersinking
we'll be countersinking
you'll be countersinking
they'll be countersinking	I'll have countersunk
you'll have countersunk
he'll have countersunk
we'll have countersunk
you'll have countersunk
they'll have countersunk	I'll have been countersinking
you'll have been countersinking
he'll have been countersinking
we'll have been countersinking
you'll have been countersinking
they'll have been countersinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shan't countersink
you shan't countersink
he shan't countersink
we shan't countersink
you shan't countersink
they shan't countersink 	I shan't be countersinking
you shan't be countersinking
he shan't be countersinking
we shan't be countersinking
you shan't be countersinking
they shan't be countersinking	I shan't have countersunk
you shan't have countersunk
he shan't have countersunk
we shan't have countersunk
you shan't have countersunk
they shan't have countersunk	I shan't have been countersinking
you shan't have been countersinking
he shan't have been countersinking
we shan't have been countersinking
you shan't have been countersinking
they shan't have been countersinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shall I countersink?
shall you countersink?
shall he countersink?
shall we countersink?
shall you countersink?
shall they countersink? 	shall I be countersinking?
shall you be countersinking?
shall he be countersinking?
shall we be countersinking?
shall you be countersinking?
shall they be countersinking? 	shall I have countersunk?
shall you have countersunk?
shall he have countersunk?
shall we have countersunk?
shall you have countersunk?
shall they have countersunk? 	shall I have been countersinking?
shall you have been countersinking?
shall he have been countersinking?
shall we have been countersinking?
shall you have been countersinking?
shall they have been countersinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shan't I countersink?
shan't you countersink?
shan't he countersink?
shan't we countersink?
shan't you countersink?
shan't they countersink? 	shan't I be countersinking?
shan't you be countersinking?
shan't he be countersinking?
shan't we be countersinking?
shan't you be countersinking?
shan't they be countersinking? 	shan't I have countersunk?
shan't you have countersunk?
shan't he have countersunk?
shan't we have countersunk?
shan't you have countersunk?
shan't they have countersunk? 	shan't I have been countersinking?
shan't you have been countersinking?
shan't he have been countersinking?
shan't we have been countersinking?
shan't you have been countersinking?
shan't they have been countersinking?