can humbug
Regular verb: humbug - humbugged- humbugged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can humbug
you can humbug
he can humbug
we can humbug
you can humbug
they can humbug 	I can be humbugging
you can be humbugging
he can be humbugging
we can be humbugging
you can be humbugging
they can be humbugging	I can have humbugged
you can have humbugged
he can have humbugged
we can have humbugged
you can have humbugged
they can have humbugged	I can have been humbugging
you can have been humbugging
he can have been humbugging
we can have been humbugging
you can have been humbugging
they can have been humbugging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't humbug
you can't humbug
he can't humbug
we can't humbug
you can't humbug
they can't humbug 	I can't be humbugging
you can't be humbugging
he can't be humbugging
we can't be humbugging
you can't be humbugging
they can't be humbugging	I can't have humbugged
you can't have humbugged
he can't have humbugged
we can't have humbugged
you can't have humbugged
they can't have humbugged	I can't have been humbugging
you can't have been humbugging
he can't have been humbugging
we can't have been humbugging
you can't have been humbugging
they can't have been humbugging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I humbug?
can you humbug?
can he humbug?
can we humbug?
can you humbug?
can they humbug? 	can I be humbugging?
can you be humbugging?
can he be humbugging?
can we be humbugging?
can you be humbugging?
can they be humbugging? 	can I have humbugged?
can you have humbugged?
can he have humbugged?
can we have humbugged?
can you have humbugged?
can they have humbugged? 	can I have been humbugging?
can you have been humbugging?
can he have been humbugging?
can we have been humbugging?
can you have been humbugging?
can they have been humbugging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I humbug?
can't you humbug?
can't he humbug?
can't we humbug?
can't you humbug?
can't they humbug? 	can't I be humbugging?
can't you be humbugging?
can't he be humbugging?
can't we be humbugging?
can't you be humbugging?
can't they be humbugging? 	can't I have humbugged?
can't you have humbugged?
can't he have humbugged?
can't we have humbugged?
can't you have humbugged?
can't they have humbugged? 	can't I have been humbugging?
can't you have been humbugging?
can't he have been humbugging?
can't we have been humbugging?
can't you have been humbugging?
can't they have been humbugging?