will countersink
Irregular verb: countersink - countersank- countersunk

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I will not countersink
you will not countersink
he will not countersink
we will not countersink
you will not countersink
they will not countersink 	I will not be countersinking
you will not be countersinking
he will not be countersinking
we will not be countersinking
you will not be countersinking
they will not be countersinking	I will not have countersunk
you will not have countersunk
he will not have countersunk
we will not have countersunk
you will not have countersunk
they will not have countersunk	I will not have been countersinking
you will not have been countersinking
he will not have been countersinking
we will not have been countersinking
you will not have been countersinking
they will not have been countersinking	

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

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