can humbug
Regular verb: humbug - humbugged- humbugged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can humbug
you can humbug
she can humbug
we can humbug
you can humbug
they can humbug 	I can be humbugging
you can be humbugging
she can be humbugging
we can be humbugging
you can be humbugging
they can be humbugging	I can have humbugged
you can have humbugged
she 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
she 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 cannot humbug
you cannot humbug
she cannot humbug
we cannot humbug
you cannot humbug
they cannot humbug 	I cannot be humbugging
you cannot be humbugging
she cannot be humbugging
we cannot be humbugging
you cannot be humbugging
they cannot be humbugging	I cannot have humbugged
you cannot have humbugged
she cannot have humbugged
we cannot have humbugged
you cannot have humbugged
they cannot have humbugged	I cannot have been humbugging
you cannot have been humbugging
she cannot have been humbugging
we cannot have been humbugging
you cannot have been humbugging
they cannot have been humbugging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I humbug?
can you humbug?
can she humbug?
can we humbug?
can you humbug?
can they humbug? 	can I be humbugging?
can you be humbugging?
can she be humbugging?
can we be humbugging?
can you be humbugging?
can they be humbugging? 	can I have humbugged?
can you have humbugged?
can she 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 she 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 I not humbug?
can you not humbug?
can she not humbug?
can we not humbug?
can you not humbug?
can they not humbug? 	can I not be humbugging?
can you not be humbugging?
can she not be humbugging?
can we not be humbugging?
can you not be humbugging?
can they not be humbugging? 	can I not have humbugged?
can you not have humbugged?
can she not have humbugged?
can we not have humbugged?
can you not have humbugged?
can they not have humbugged? 	can I not have been humbugging?
can you not have been humbugging?
can she not have been humbugging?
can we not have been humbugging?
can you not have been humbugging?
can they not have been humbugging?