I could belong you could belong he could belong we could belong you could belong they could belong
V-ing form
I could be belonging you could be belonging he could be belonging we could be belonging you could be belonging they could be belonging
Perfect
I could have belonged you could have belonged he could have belonged we could have belonged you could have belonged they could have belonged
V-ing perfect
I could have been belonging you could have been belonging he could have been belonging we could have been belonging you could have been belonging they could have been belonging
Negation
Simple form
I couldn't belong you couldn't belong he couldn't belong we couldn't belong you couldn't belong they couldn't belong
V-ing form
I couldn't be belonging you couldn't be belonging he couldn't be belonging we couldn't be belonging you couldn't be belonging they couldn't be belonging
Perfect
I couldn't have belonged you couldn't have belonged he couldn't have belonged we couldn't have belonged you couldn't have belonged they couldn't have belonged
V-ing perfect
I couldn't have been belonging you couldn't have been belonging he couldn't have been belonging we couldn't have been belonging you couldn't have been belonging they couldn't have been belonging
Interrogative form
Simple form
could I belong? could you belong? could he belong? could we belong? could you belong? could they belong?
V-ing form
could I be belonging? could you be belonging? could he be belonging? could we be belonging? could you be belonging? could they be belonging?
Perfect
could I have belonged? could you have belonged? could he have belonged? could we have belonged? could you have belonged? could they have belonged?
V-ing perfect
could I have been belonging? could you have been belonging? could he have been belonging? could we have been belonging? could you have been belonging? could they have been belonging?
Interro-negative form
Simple form
couldn't I belong? couldn't you belong? couldn't he belong? couldn't we belong? couldn't you belong? couldn't they belong?
V-ing form
couldn't I be belonging? couldn't you be belonging? couldn't he be belonging? couldn't we be belonging? couldn't you be belonging? couldn't they be belonging?
Perfect
couldn't I have belonged? couldn't you have belonged? couldn't he have belonged? couldn't we have belonged? couldn't you have belonged? couldn't they have belonged?
V-ing perfect
couldn't I have been belonging? couldn't you have been belonging? couldn't he have been belonging? couldn't we have been belonging? couldn't you have been belonging? couldn't they have been belonging?