I can buggar you can buggar she can buggar we can buggar you can buggar they can buggar
V-ing form
I can be buggaring you can be buggaring she can be buggaring we can be buggaring you can be buggaring they can be buggaring
Perfect
I can have buggared you can have buggared she can have buggared we can have buggared you can have buggared they can have buggared
V-ing perfect
I can have been buggaring you can have been buggaring she can have been buggaring we can have been buggaring you can have been buggaring they can have been buggaring
Negation
Simple form
I cannot buggar you cannot buggar she cannot buggar we cannot buggar you cannot buggar they cannot buggar
V-ing form
I cannot be buggaring you cannot be buggaring she cannot be buggaring we cannot be buggaring you cannot be buggaring they cannot be buggaring
Perfect
I cannot have buggared you cannot have buggared she cannot have buggared we cannot have buggared you cannot have buggared they cannot have buggared
V-ing perfect
I cannot have been buggaring you cannot have been buggaring she cannot have been buggaring we cannot have been buggaring you cannot have been buggaring they cannot have been buggaring
Interrogative form
Simple form
can I buggar? can you buggar? can she buggar? can we buggar? can you buggar? can they buggar?
V-ing form
can I be buggaring? can you be buggaring? can she be buggaring? can we be buggaring? can you be buggaring? can they be buggaring?
Perfect
can I have buggared? can you have buggared? can she have buggared? can we have buggared? can you have buggared? can they have buggared?
V-ing perfect
can I have been buggaring? can you have been buggaring? can she have been buggaring? can we have been buggaring? can you have been buggaring? can they have been buggaring?
Interro-negative form
Simple form
can I not buggar? can you not buggar? can she not buggar? can we not buggar? can you not buggar? can they not buggar?
V-ing form
can I not be buggaring? can you not be buggaring? can she not be buggaring? can we not be buggaring? can you not be buggaring? can they not be buggaring?
Perfect
can I not have buggared? can you not have buggared? can she not have buggared? can we not have buggared? can you not have buggared? can they not have buggared?
V-ing perfect
can I not have been buggaring? can you not have been buggaring? can she not have been buggaring? can we not have been buggaring? can you not have been buggaring? can they not have been buggaring?