can tick
Verbo regular: tick - ticked- ticked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can tick
you can tick
she can tick
we can tick
you can tick
they can tick 	I can be ticking
you can be ticking
she can be ticking
we can be ticking
you can be ticking
they can be ticking	I can have ticked
you can have ticked
she can have ticked
we can have ticked
you can have ticked
they can have ticked	I can have been ticking
you can have been ticking
she can have been ticking
we can have been ticking
you can have been ticking
they can have been ticking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot tick
you cannot tick
she cannot tick
we cannot tick
you cannot tick
they cannot tick 	I cannot be ticking
you cannot be ticking
she cannot be ticking
we cannot be ticking
you cannot be ticking
they cannot be ticking	I cannot have ticked
you cannot have ticked
she cannot have ticked
we cannot have ticked
you cannot have ticked
they cannot have ticked	I cannot have been ticking
you cannot have been ticking
she cannot have been ticking
we cannot have been ticking
you cannot have been ticking
they cannot have been ticking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I tick?
can you tick?
can she tick?
can we tick?
can you tick?
can they tick? 	can I be ticking?
can you be ticking?
can she be ticking?
can we be ticking?
can you be ticking?
can they be ticking? 	can I have ticked?
can you have ticked?
can she have ticked?
can we have ticked?
can you have ticked?
can they have ticked? 	can I have been ticking?
can you have been ticking?
can she have been ticking?
can we have been ticking?
can you have been ticking?
can they have been ticking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not tick?
can you not tick?
can she not tick?
can we not tick?
can you not tick?
can they not tick? 	can I not be ticking?
can you not be ticking?
can she not be ticking?
can we not be ticking?
can you not be ticking?
can they not be ticking? 	can I not have ticked?
can you not have ticked?
can she not have ticked?
can we not have ticked?
can you not have ticked?
can they not have ticked? 	can I not have been ticking?
can you not have been ticking?
can she not have been ticking?
can we not have been ticking?
can you not have been ticking?
can they not have been ticking?