can checkmate
Verbo regular: checkmate - checkmated- checkmated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can checkmate
you can checkmate
she can checkmate
we can checkmate
you can checkmate
they can checkmate 	I can be checkmating
you can be checkmating
she can be checkmating
we can be checkmating
you can be checkmating
they can be checkmating	I can have checkmated
you can have checkmated
she can have checkmated
we can have checkmated
you can have checkmated
they can have checkmated	I can have been checkmating
you can have been checkmating
she can have been checkmating
we can have been checkmating
you can have been checkmating
they can have been checkmating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot checkmate
you cannot checkmate
she cannot checkmate
we cannot checkmate
you cannot checkmate
they cannot checkmate 	I cannot be checkmating
you cannot be checkmating
she cannot be checkmating
we cannot be checkmating
you cannot be checkmating
they cannot be checkmating	I cannot have checkmated
you cannot have checkmated
she cannot have checkmated
we cannot have checkmated
you cannot have checkmated
they cannot have checkmated	I cannot have been checkmating
you cannot have been checkmating
she cannot have been checkmating
we cannot have been checkmating
you cannot have been checkmating
they cannot have been checkmating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I checkmate?
can you checkmate?
can she checkmate?
can we checkmate?
can you checkmate?
can they checkmate? 	can I be checkmating?
can you be checkmating?
can she be checkmating?
can we be checkmating?
can you be checkmating?
can they be checkmating? 	can I have checkmated?
can you have checkmated?
can she have checkmated?
can we have checkmated?
can you have checkmated?
can they have checkmated? 	can I have been checkmating?
can you have been checkmating?
can she have been checkmating?
can we have been checkmating?
can you have been checkmating?
can they have been checkmating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not checkmate?
can you not checkmate?
can she not checkmate?
can we not checkmate?
can you not checkmate?
can they not checkmate? 	can I not be checkmating?
can you not be checkmating?
can she not be checkmating?
can we not be checkmating?
can you not be checkmating?
can they not be checkmating? 	can I not have checkmated?
can you not have checkmated?
can she not have checkmated?
can we not have checkmated?
can you not have checkmated?
can they not have checkmated? 	can I not have been checkmating?
can you not have been checkmating?
can she not have been checkmating?
can we not have been checkmating?
can you not have been checkmating?
can they not have been checkmating?