I could budget you could budget she could budget we could budget you could budget they could budget
V-ing form
I could be budgeting you could be budgeting she could be budgeting we could be budgeting you could be budgeting they could be budgeting
Perfect
I could have budgeted you could have budgeted she could have budgeted we could have budgeted you could have budgeted they could have budgeted
V-ing perfect
I could have been budgeting you could have been budgeting she could have been budgeting we could have been budgeting you could have been budgeting they could have been budgeting
Negation
Simple form
I could not budget you could not budget she could not budget we could not budget you could not budget they could not budget
V-ing form
I could not be budgeting you could not be budgeting she could not be budgeting we could not be budgeting you could not be budgeting they could not be budgeting
Perfect
I could not have budgeted you could not have budgeted she could not have budgeted we could not have budgeted you could not have budgeted they could not have budgeted
V-ing perfect
I could not have been budgeting you could not have been budgeting she could not have been budgeting we could not have been budgeting you could not have been budgeting they could not have been budgeting
Interrogative form
Simple form
could I budget? could you budget? could she budget? could we budget? could you budget? could they budget?
V-ing form
could I be budgeting? could you be budgeting? could she be budgeting? could we be budgeting? could you be budgeting? could they be budgeting?
Perfect
could I have budgeted? could you have budgeted? could she have budgeted? could we have budgeted? could you have budgeted? could they have budgeted?
V-ing perfect
could I have been budgeting? could you have been budgeting? could she have been budgeting? could we have been budgeting? could you have been budgeting? could they have been budgeting?
Interro-negative form
Simple form
could I not budget? could you not budget? could she not budget? could we not budget? could you not budget? could they not budget?
V-ing form
could I not be budgeting? could you not be budgeting? could she not be budgeting? could we not be budgeting? could you not be budgeting? could they not be budgeting?
Perfect
could I not have budgeted? could you not have budgeted? could she not have budgeted? could we not have budgeted? could you not have budgeted? could they not have budgeted?
V-ing perfect
could I not have been budgeting? could you not have been budgeting? could she not have been budgeting? could we not have been budgeting? could you not have been budgeting? could they not have been budgeting?