I can bunker you can bunker he can bunker we can bunker you can bunker they can bunker
V-ing form
I can be bunkering you can be bunkering he can be bunkering we can be bunkering you can be bunkering they can be bunkering
Perfect
I can have bunkered you can have bunkered he can have bunkered we can have bunkered you can have bunkered they can have bunkered
V-ing perfect
I can have been bunkering you can have been bunkering he can have been bunkering we can have been bunkering you can have been bunkering they can have been bunkering
Negation
Simple form
I cannot bunker you cannot bunker he cannot bunker we cannot bunker you cannot bunker they cannot bunker
V-ing form
I cannot be bunkering you cannot be bunkering he cannot be bunkering we cannot be bunkering you cannot be bunkering they cannot be bunkering
Perfect
I cannot have bunkered you cannot have bunkered he cannot have bunkered we cannot have bunkered you cannot have bunkered they cannot have bunkered
V-ing perfect
I cannot have been bunkering you cannot have been bunkering he cannot have been bunkering we cannot have been bunkering you cannot have been bunkering they cannot have been bunkering
Interrogative form
Simple form
can I bunker? can you bunker? can he bunker? can we bunker? can you bunker? can they bunker?
V-ing form
can I be bunkering? can you be bunkering? can he be bunkering? can we be bunkering? can you be bunkering? can they be bunkering?
Perfect
can I have bunkered? can you have bunkered? can he have bunkered? can we have bunkered? can you have bunkered? can they have bunkered?
V-ing perfect
can I have been bunkering? can you have been bunkering? can he have been bunkering? can we have been bunkering? can you have been bunkering? can they have been bunkering?
Interro-negative form
Simple form
can I not bunker? can you not bunker? can he not bunker? can we not bunker? can you not bunker? can they not bunker?
V-ing form
can I not be bunkering? can you not be bunkering? can he not be bunkering? can we not be bunkering? can you not be bunkering? can they not be bunkering?
Perfect
can I not have bunkered? can you not have bunkered? can he not have bunkered? can we not have bunkered? can you not have bunkered? can they not have bunkered?
V-ing perfect
can I not have been bunkering? can you not have been bunkering? can he not have been bunkering? can we not have been bunkering? can you not have been bunkering? can they not have been bunkering?