can dog
Regular verb: dog - dogged- dogged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can dog
you can dog
he can dog
we can dog
you can dog
they can dog 	I can be dogging
you can be dogging
he can be dogging
we can be dogging
you can be dogging
they can be dogging	I can have dogged
you can have dogged
he can have dogged
we can have dogged
you can have dogged
they can have dogged	I can have been dogging
you can have been dogging
he can have been dogging
we can have been dogging
you can have been dogging
they can have been dogging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't dog
you can't dog
he can't dog
we can't dog
you can't dog
they can't dog 	I can't be dogging
you can't be dogging
he can't be dogging
we can't be dogging
you can't be dogging
they can't be dogging	I can't have dogged
you can't have dogged
he can't have dogged
we can't have dogged
you can't have dogged
they can't have dogged	I can't have been dogging
you can't have been dogging
he can't have been dogging
we can't have been dogging
you can't have been dogging
they can't have been dogging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I dog?
can you dog?
can he dog?
can we dog?
can you dog?
can they dog? 	can I be dogging?
can you be dogging?
can he be dogging?
can we be dogging?
can you be dogging?
can they be dogging? 	can I have dogged?
can you have dogged?
can he have dogged?
can we have dogged?
can you have dogged?
can they have dogged? 	can I have been dogging?
can you have been dogging?
can he have been dogging?
can we have been dogging?
can you have been dogging?
can they have been dogging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I dog?
can't you dog?
can't he dog?
can't we dog?
can't you dog?
can't they dog? 	can't I be dogging?
can't you be dogging?
can't he be dogging?
can't we be dogging?
can't you be dogging?
can't they be dogging? 	can't I have dogged?
can't you have dogged?
can't he have dogged?
can't we have dogged?
can't you have dogged?
can't they have dogged? 	can't I have been dogging?
can't you have been dogging?
can't he have been dogging?
can't we have been dogging?
can't you have been dogging?
can't they have been dogging?