could tick
Verbo regular: tick - ticked- ticked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could tick
you could tick
she could tick
we could tick
you could tick
they could tick 	I could be ticking
you could be ticking
she could be ticking
we could be ticking
you could be ticking
they could be ticking	I could have ticked
you could have ticked
she could have ticked
we could have ticked
you could have ticked
they could have ticked	I could have been ticking
you could have been ticking
she could have been ticking
we could have been ticking
you could have been ticking
they could have been ticking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not tick
you could not tick
she could not tick
we could not tick
you could not tick
they could not tick 	I could not be ticking
you could not be ticking
she could not be ticking
we could not be ticking
you could not be ticking
they could not be ticking	I could not have ticked
you could not have ticked
she could not have ticked
we could not have ticked
you could not have ticked
they could not have ticked	I could not have been ticking
you could not have been ticking
she could not have been ticking
we could not have been ticking
you could not have been ticking
they could not have been ticking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I tick?
could you tick?
could she tick?
could we tick?
could you tick?
could they tick? 	could I be ticking?
could you be ticking?
could she be ticking?
could we be ticking?
could you be ticking?
could they be ticking? 	could I have ticked?
could you have ticked?
could she have ticked?
could we have ticked?
could you have ticked?
could they have ticked? 	could I have been ticking?
could you have been ticking?
could she have been ticking?
could we have been ticking?
could you have been ticking?
could they have been ticking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not tick?
could you not tick?
could she not tick?
could we not tick?
could you not tick?
could they not tick? 	could I not be ticking?
could you not be ticking?
could she not be ticking?
could we not be ticking?
could you not be ticking?
could they not be ticking? 	could I not have ticked?
could you not have ticked?
could she not have ticked?
could we not have ticked?
could you not have ticked?
could they not have ticked? 	could I not have been ticking?
could you not have been ticking?
could she not have been ticking?
could we not have been ticking?
could you not have been ticking?
could they not have been ticking?