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