can tick
Regular verb: tick - ticked- ticked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can tick
you can tick
he can tick
we can tick
you can tick
they can tick 	I can be ticking
you can be ticking
he can be ticking
we can be ticking
you can be ticking
they can be ticking	I can have ticked
you can have ticked
he 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
he can have been ticking
we can have been ticking
you can have been ticking
they can have been ticking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't tick
you can't tick
he can't tick
we can't tick
you can't tick
they can't tick 	I can't be ticking
you can't be ticking
he can't be ticking
we can't be ticking
you can't be ticking
they can't be ticking	I can't have ticked
you can't have ticked
he can't have ticked
we can't have ticked
you can't have ticked
they can't have ticked	I can't have been ticking
you can't have been ticking
he can't have been ticking
we can't have been ticking
you can't have been ticking
they can't have been ticking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I tick?
can you tick?
can he tick?
can we tick?
can you tick?
can they tick? 	can I be ticking?
can you be ticking?
can he be ticking?
can we be ticking?
can you be ticking?
can they be ticking? 	can I have ticked?
can you have ticked?
can he 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 he have been ticking?
can we have been ticking?
can you have been ticking?
can they have been ticking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I tick?
can't you tick?
can't he tick?
can't we tick?
can't you tick?
can't they tick? 	can't I be ticking?
can't you be ticking?
can't he be ticking?
can't we be ticking?
can't you be ticking?
can't they be ticking? 	can't I have ticked?
can't you have ticked?
can't he have ticked?
can't we have ticked?
can't you have ticked?
can't they have ticked? 	can't I have been ticking?
can't you have been ticking?
can't he have been ticking?
can't we have been ticking?
can't you have been ticking?
can't they have been ticking?