can oblige
Regular verb: oblige - obliged- obliged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can oblige
you can oblige
he can oblige
we can oblige
you can oblige
they can oblige 	I can be obliging
you can be obliging
he can be obliging
we can be obliging
you can be obliging
they can be obliging	I can have obliged
you can have obliged
he can have obliged
we can have obliged
you can have obliged
they can have obliged	I can have been obliging
you can have been obliging
he can have been obliging
we can have been obliging
you can have been obliging
they can have been obliging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot oblige
you cannot oblige
he cannot oblige
we cannot oblige
you cannot oblige
they cannot oblige 	I cannot be obliging
you cannot be obliging
he cannot be obliging
we cannot be obliging
you cannot be obliging
they cannot be obliging	I cannot have obliged
you cannot have obliged
he cannot have obliged
we cannot have obliged
you cannot have obliged
they cannot have obliged	I cannot have been obliging
you cannot have been obliging
he cannot have been obliging
we cannot have been obliging
you cannot have been obliging
they cannot have been obliging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I oblige?
can you oblige?
can he oblige?
can we oblige?
can you oblige?
can they oblige? 	can I be obliging?
can you be obliging?
can he be obliging?
can we be obliging?
can you be obliging?
can they be obliging? 	can I have obliged?
can you have obliged?
can he have obliged?
can we have obliged?
can you have obliged?
can they have obliged? 	can I have been obliging?
can you have been obliging?
can he have been obliging?
can we have been obliging?
can you have been obliging?
can they have been obliging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not oblige?
can you not oblige?
can he not oblige?
can we not oblige?
can you not oblige?
can they not oblige? 	can I not be obliging?
can you not be obliging?
can he not be obliging?
can we not be obliging?
can you not be obliging?
can they not be obliging? 	can I not have obliged?
can you not have obliged?
can he not have obliged?
can we not have obliged?
can you not have obliged?
can they not have obliged? 	can I not have been obliging?
can you not have been obliging?
can he not have been obliging?
can we not have been obliging?
can you not have been obliging?
can they not have been obliging?