Regular verb: establish - established - established
Affirmation
Simple form
I can establish you can establish he can establish we can establish you can establish they can establish
V-ing form
I can be establishing you can be establishing he can be establishing we can be establishing you can be establishing they can be establishing
Perfect
I can have established you can have established he can have established we can have established you can have established they can have established
V-ing perfect
I can have been establishing you can have been establishing he can have been establishing we can have been establishing you can have been establishing they can have been establishing
Negation
Simple form
I can't establish you can't establish he can't establish we can't establish you can't establish they can't establish
V-ing form
I can't be establishing you can't be establishing he can't be establishing we can't be establishing you can't be establishing they can't be establishing
Perfect
I can't have established you can't have established he can't have established we can't have established you can't have established they can't have established
V-ing perfect
I can't have been establishing you can't have been establishing he can't have been establishing we can't have been establishing you can't have been establishing they can't have been establishing
Interrogative form
Simple form
can I establish? can you establish? can he establish? can we establish? can you establish? can they establish?
V-ing form
can I be establishing? can you be establishing? can he be establishing? can we be establishing? can you be establishing? can they be establishing?
Perfect
can I have established? can you have established? can he have established? can we have established? can you have established? can they have established?
V-ing perfect
can I have been establishing? can you have been establishing? can he have been establishing? can we have been establishing? can you have been establishing? can they have been establishing?
Interro-negative form
Simple form
can't I establish? can't you establish? can't he establish? can't we establish? can't you establish? can't they establish?
V-ing form
can't I be establishing? can't you be establishing? can't he be establishing? can't we be establishing? can't you be establishing? can't they be establishing?
Perfect
can't I have established? can't you have established? can't he have established? can't we have established? can't you have established? can't they have established?
V-ing perfect
can't I have been establishing? can't you have been establishing? can't he have been establishing? can't we have been establishing? can't you have been establishing? can't they have been establishing?