can spark
Regular verb: spark - sparked- sparked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can spark
you can spark
he can spark
we can spark
you can spark
they can spark 	I can be sparking
you can be sparking
he can be sparking
we can be sparking
you can be sparking
they can be sparking	I can have sparked
you can have sparked
he can have sparked
we can have sparked
you can have sparked
they can have sparked	I can have been sparking
you can have been sparking
he can have been sparking
we can have been sparking
you can have been sparking
they can have been sparking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't spark
you can't spark
he can't spark
we can't spark
you can't spark
they can't spark 	I can't be sparking
you can't be sparking
he can't be sparking
we can't be sparking
you can't be sparking
they can't be sparking	I can't have sparked
you can't have sparked
he can't have sparked
we can't have sparked
you can't have sparked
they can't have sparked	I can't have been sparking
you can't have been sparking
he can't have been sparking
we can't have been sparking
you can't have been sparking
they can't have been sparking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I spark?
can you spark?
can he spark?
can we spark?
can you spark?
can they spark? 	can I be sparking?
can you be sparking?
can he be sparking?
can we be sparking?
can you be sparking?
can they be sparking? 	can I have sparked?
can you have sparked?
can he have sparked?
can we have sparked?
can you have sparked?
can they have sparked? 	can I have been sparking?
can you have been sparking?
can he have been sparking?
can we have been sparking?
can you have been sparking?
can they have been sparking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I spark?
can't you spark?
can't he spark?
can't we spark?
can't you spark?
can't they spark? 	can't I be sparking?
can't you be sparking?
can't he be sparking?
can't we be sparking?
can't you be sparking?
can't they be sparking? 	can't I have sparked?
can't you have sparked?
can't he have sparked?
can't we have sparked?
can't you have sparked?
can't they have sparked? 	can't I have been sparking?
can't you have been sparking?
can't he have been sparking?
can't we have been sparking?
can't you have been sparking?
can't they have been sparking?