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