can trephine
Verbo regular: trephine - trephined- trephined

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can trephine
you can trephine
he can trephine
we can trephine
you can trephine
they can trephine 	I can be trephining
you can be trephining
he can be trephining
we can be trephining
you can be trephining
they can be trephining	I can have trephined
you can have trephined
he can have trephined
we can have trephined
you can have trephined
they can have trephined	I can have been trephining
you can have been trephining
he can have been trephining
we can have been trephining
you can have been trephining
they can have been trephining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot trephine
you cannot trephine
he cannot trephine
we cannot trephine
you cannot trephine
they cannot trephine 	I cannot be trephining
you cannot be trephining
he cannot be trephining
we cannot be trephining
you cannot be trephining
they cannot be trephining	I cannot have trephined
you cannot have trephined
he cannot have trephined
we cannot have trephined
you cannot have trephined
they cannot have trephined	I cannot have been trephining
you cannot have been trephining
he cannot have been trephining
we cannot have been trephining
you cannot have been trephining
they cannot have been trephining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I trephine?
can you trephine?
can he trephine?
can we trephine?
can you trephine?
can they trephine? 	can I be trephining?
can you be trephining?
can he be trephining?
can we be trephining?
can you be trephining?
can they be trephining? 	can I have trephined?
can you have trephined?
can he have trephined?
can we have trephined?
can you have trephined?
can they have trephined? 	can I have been trephining?
can you have been trephining?
can he have been trephining?
can we have been trephining?
can you have been trephining?
can they have been trephining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not trephine?
can you not trephine?
can he not trephine?
can we not trephine?
can you not trephine?
can they not trephine? 	can I not be trephining?
can you not be trephining?
can he not be trephining?
can we not be trephining?
can you not be trephining?
can they not be trephining? 	can I not have trephined?
can you not have trephined?
can he not have trephined?
can we not have trephined?
can you not have trephined?
can they not have trephined? 	can I not have been trephining?
can you not have been trephining?
can he not have been trephining?
can we not have been trephining?
can you not have been trephining?
can they not have been trephining?