I can encounter you can encounter he can encounter we can encounter you can encounter they can encounter
V-ing form
I can be encountering you can be encountering he can be encountering we can be encountering you can be encountering they can be encountering
Perfect
I can have encountered you can have encountered he can have encountered we can have encountered you can have encountered they can have encountered
V-ing perfect
I can have been encountering you can have been encountering he can have been encountering we can have been encountering you can have been encountering they can have been encountering
Negation
Simple form
I can't encounter you can't encounter he can't encounter we can't encounter you can't encounter they can't encounter
V-ing form
I can't be encountering you can't be encountering he can't be encountering we can't be encountering you can't be encountering they can't be encountering
Perfect
I can't have encountered you can't have encountered he can't have encountered we can't have encountered you can't have encountered they can't have encountered
V-ing perfect
I can't have been encountering you can't have been encountering he can't have been encountering we can't have been encountering you can't have been encountering they can't have been encountering
Interrogative form
Simple form
can I encounter? can you encounter? can he encounter? can we encounter? can you encounter? can they encounter?
V-ing form
can I be encountering? can you be encountering? can he be encountering? can we be encountering? can you be encountering? can they be encountering?
Perfect
can I have encountered? can you have encountered? can he have encountered? can we have encountered? can you have encountered? can they have encountered?
V-ing perfect
can I have been encountering? can you have been encountering? can he have been encountering? can we have been encountering? can you have been encountering? can they have been encountering?
Interro-negative form
Simple form
can't I encounter? can't you encounter? can't he encounter? can't we encounter? can't you encounter? can't they encounter?
V-ing form
can't I be encountering? can't you be encountering? can't he be encountering? can't we be encountering? can't you be encountering? can't they be encountering?
Perfect
can't I have encountered? can't you have encountered? can't he have encountered? can't we have encountered? can't you have encountered? can't they have encountered?
V-ing perfect
can't I have been encountering? can't you have been encountering? can't he have been encountering? can't we have been encountering? can't you have been encountering? can't they have been encountering?