shall countersink
Irregular verb: countersink - countersank- countersunk

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'll countersink
you'll countersink
she'll countersink
we'll countersink
you'll countersink
they'll countersink 	I'll be countersinking
you'll be countersinking
she'll be countersinking
we'll be countersinking
you'll be countersinking
they'll be countersinking	I'll have countersunk
you'll have countersunk
she'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
she'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
she 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
she 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
she 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
she 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 she countersink?
shall we countersink?
shall you countersink?
shall they countersink? 	shall I be countersinking?
shall you be countersinking?
shall she be countersinking?
shall we be countersinking?
shall you be countersinking?
shall they be countersinking? 	shall I have countersunk?
shall you have countersunk?
shall she 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 she 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 she 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 she 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 she 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 she have been countersinking?
shan't we have been countersinking?
shan't you have been countersinking?
shan't they have been countersinking?