can vanquish
Regular verb: vanquish - vanquished- vanquished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can vanquish
you can vanquish
he can vanquish
we can vanquish
you can vanquish
they can vanquish 	I can be vanquishing
you can be vanquishing
he can be vanquishing
we can be vanquishing
you can be vanquishing
they can be vanquishing	I can have vanquished
you can have vanquished
he can have vanquished
we can have vanquished
you can have vanquished
they can have vanquished	I can have been vanquishing
you can have been vanquishing
he can have been vanquishing
we can have been vanquishing
you can have been vanquishing
they can have been vanquishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot vanquish
you cannot vanquish
he cannot vanquish
we cannot vanquish
you cannot vanquish
they cannot vanquish 	I cannot be vanquishing
you cannot be vanquishing
he cannot be vanquishing
we cannot be vanquishing
you cannot be vanquishing
they cannot be vanquishing	I cannot have vanquished
you cannot have vanquished
he cannot have vanquished
we cannot have vanquished
you cannot have vanquished
they cannot have vanquished	I cannot have been vanquishing
you cannot have been vanquishing
he cannot have been vanquishing
we cannot have been vanquishing
you cannot have been vanquishing
they cannot have been vanquishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I vanquish?
can you vanquish?
can he vanquish?
can we vanquish?
can you vanquish?
can they vanquish? 	can I be vanquishing?
can you be vanquishing?
can he be vanquishing?
can we be vanquishing?
can you be vanquishing?
can they be vanquishing? 	can I have vanquished?
can you have vanquished?
can he have vanquished?
can we have vanquished?
can you have vanquished?
can they have vanquished? 	can I have been vanquishing?
can you have been vanquishing?
can he have been vanquishing?
can we have been vanquishing?
can you have been vanquishing?
can they have been vanquishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not vanquish?
can you not vanquish?
can he not vanquish?
can we not vanquish?
can you not vanquish?
can they not vanquish? 	can I not be vanquishing?
can you not be vanquishing?
can he not be vanquishing?
can we not be vanquishing?
can you not be vanquishing?
can they not be vanquishing? 	can I not have vanquished?
can you not have vanquished?
can he not have vanquished?
can we not have vanquished?
can you not have vanquished?
can they not have vanquished? 	can I not have been vanquishing?
can you not have been vanquishing?
can he not have been vanquishing?
can we not have been vanquishing?
can you not have been vanquishing?
can they not have been vanquishing?