can oblige
Regular verb: oblige - obliged- obliged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can oblige
you can oblige
she can oblige
we can oblige
you can oblige
they can oblige 	I can be obliging
you can be obliging
she can be obliging
we can be obliging
you can be obliging
they can be obliging	I can have obliged
you can have obliged
she 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
she 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 can't oblige
you can't oblige
she can't oblige
we can't oblige
you can't oblige
they can't oblige 	I can't be obliging
you can't be obliging
she can't be obliging
we can't be obliging
you can't be obliging
they can't be obliging	I can't have obliged
you can't have obliged
she can't have obliged
we can't have obliged
you can't have obliged
they can't have obliged	I can't have been obliging
you can't have been obliging
she can't have been obliging
we can't have been obliging
you can't have been obliging
they can't have been obliging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I oblige?
can you oblige?
can she oblige?
can we oblige?
can you oblige?
can they oblige? 	can I be obliging?
can you be obliging?
can she be obliging?
can we be obliging?
can you be obliging?
can they be obliging? 	can I have obliged?
can you have obliged?
can she 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 she 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't I oblige?
can't you oblige?
can't she oblige?
can't we oblige?
can't you oblige?
can't they oblige? 	can't I be obliging?
can't you be obliging?
can't she be obliging?
can't we be obliging?
can't you be obliging?
can't they be obliging? 	can't I have obliged?
can't you have obliged?
can't she have obliged?
can't we have obliged?
can't you have obliged?
can't they have obliged? 	can't I have been obliging?
can't you have been obliging?
can't she have been obliging?
can't we have been obliging?
can't you have been obliging?
can't they have been obliging?