I can buggar you can buggar he can buggar we can buggar you can buggar they can buggar
V-ing form
I can be buggaring you can be buggaring he can be buggaring we can be buggaring you can be buggaring they can be buggaring
Perfect
I can have buggared you can have buggared he 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 he 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 he cannot buggar we cannot buggar you cannot buggar they cannot buggar
V-ing form
I cannot be buggaring you cannot be buggaring he cannot be buggaring we cannot be buggaring you cannot be buggaring they cannot be buggaring
Perfect
I cannot have buggared you cannot have buggared he 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 he 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 he buggar? can we buggar? can you buggar? can they buggar?
V-ing form
can I be buggaring? can you be buggaring? can he be buggaring? can we be buggaring? can you be buggaring? can they be buggaring?
Perfect
can I have buggared? can you have buggared? can he 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 he 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 he 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 he 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 he 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 he not have been buggaring? can we not have been buggaring? can you not have been buggaring? can they not have been buggaring?