I can probe you can probe he can probe we can probe you can probe they can probe
V-ing form
I can be probing you can be probing he can be probing we can be probing you can be probing they can be probing
Perfect
I can have probed you can have probed he can have probed we can have probed you can have probed they can have probed
V-ing perfect
I can have been probing you can have been probing he can have been probing we can have been probing you can have been probing they can have been probing
Negation
Simple form
I can't probe you can't probe he can't probe we can't probe you can't probe they can't probe
V-ing form
I can't be probing you can't be probing he can't be probing we can't be probing you can't be probing they can't be probing
Perfect
I can't have probed you can't have probed he can't have probed we can't have probed you can't have probed they can't have probed
V-ing perfect
I can't have been probing you can't have been probing he can't have been probing we can't have been probing you can't have been probing they can't have been probing
Interrogative form
Simple form
can I probe? can you probe? can he probe? can we probe? can you probe? can they probe?
V-ing form
can I be probing? can you be probing? can he be probing? can we be probing? can you be probing? can they be probing?
Perfect
can I have probed? can you have probed? can he have probed? can we have probed? can you have probed? can they have probed?
V-ing perfect
can I have been probing? can you have been probing? can he have been probing? can we have been probing? can you have been probing? can they have been probing?
Interro-negative form
Simple form
can't I probe? can't you probe? can't he probe? can't we probe? can't you probe? can't they probe?
V-ing form
can't I be probing? can't you be probing? can't he be probing? can't we be probing? can't you be probing? can't they be probing?
Perfect
can't I have probed? can't you have probed? can't he have probed? can't we have probed? can't you have probed? can't they have probed?
V-ing perfect
can't I have been probing? can't you have been probing? can't he have been probing? can't we have been probing? can't you have been probing? can't they have been probing?