Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could force. oblige you could force. oblige he could force. oblige we could force. oblige you could force. oblige they could force. oblige
V-ing form
I could be force. obliging you could be force. obliging he could be force. obliging we could be force. obliging you could be force. obliging they could be force. obliging
Perfect
I could have force. obliged you could have force. obliged he could have force. obliged we could have force. obliged you could have force. obliged they could have force. obliged
V-ing perfect
I could have been force. obliging you could have been force. obliging he could have been force. obliging we could have been force. obliging you could have been force. obliging they could have been force. obliging
Negation
Simple form
I couldn't force. oblige you couldn't force. oblige he couldn't force. oblige we couldn't force. oblige you couldn't force. oblige they couldn't force. oblige
V-ing form
I couldn't be force. obliging you couldn't be force. obliging he couldn't be force. obliging we couldn't be force. obliging you couldn't be force. obliging they couldn't be force. obliging
Perfect
I couldn't have force. obliged you couldn't have force. obliged he couldn't have force. obliged we couldn't have force. obliged you couldn't have force. obliged they couldn't have force. obliged
V-ing perfect
I couldn't have been force. obliging you couldn't have been force. obliging he couldn't have been force. obliging we couldn't have been force. obliging you couldn't have been force. obliging they couldn't have been force. obliging
Interrogative form
Simple form
could I force. oblige? could you force. oblige? could he force. oblige? could we force. oblige? could you force. oblige? could they force. oblige?
V-ing form
could I be force. obliging? could you be force. obliging? could he be force. obliging? could we be force. obliging? could you be force. obliging? could they be force. obliging?
Perfect
could I have force. obliged? could you have force. obliged? could he have force. obliged? could we have force. obliged? could you have force. obliged? could they have force. obliged?
V-ing perfect
could I have been force. obliging? could you have been force. obliging? could he have been force. obliging? could we have been force. obliging? could you have been force. obliging? could they have been force. obliging?
Interro-negative form
Simple form
couldn't I force. oblige? couldn't you force. oblige? couldn't he force. oblige? couldn't we force. oblige? couldn't you force. oblige? couldn't they force. oblige?
V-ing form
couldn't I be force. obliging? couldn't you be force. obliging? couldn't he be force. obliging? couldn't we be force. obliging? couldn't you be force. obliging? couldn't they be force. obliging?
Perfect
couldn't I have force. obliged? couldn't you have force. obliged? couldn't he have force. obliged? couldn't we have force. obliged? couldn't you have force. obliged? couldn't they have force. obliged?
V-ing perfect
couldn't I have been force. obliging? couldn't you have been force. obliging? couldn't he have been force. obliging? couldn't we have been force. obliging? couldn't you have been force. obliging? couldn't they have been force. obliging?