
Verbo regular: publish - published - published
Forma simple | Forma com V-ing | 
| I could publish you could publish he could publish we could publish you could publish they could publish  | I could be publishing you could be publishing he could be publishing we could be publishing you could be publishing they could be publishing  | 
Perfeito | Perfeito com V-ing | 
| I could have published you could have published he could have published we could have published you could have published they could have published  | I could have been publishing you could have been publishing he could have been publishing we could have been publishing you could have been publishing they could have been publishing  | 
Forma simple | Forma com V-ing | 
| I couldn't publish you couldn't publish he couldn't publish we couldn't publish you couldn't publish they couldn't publish  | I couldn't be publishing you couldn't be publishing he couldn't be publishing we couldn't be publishing you couldn't be publishing they couldn't be publishing  | 
Perfeito | Perfeito com V-ing | 
| I couldn't have published you couldn't have published he couldn't have published we couldn't have published you couldn't have published they couldn't have published  | I couldn't have been publishing you couldn't have been publishing he couldn't have been publishing we couldn't have been publishing you couldn't have been publishing they couldn't have been publishing  | 
Forma simple | Forma com V-ing | 
| could I publish? could you publish? could he publish? could we publish? could you publish? could they publish?  | could I be publishing? could you be publishing? could he be publishing? could we be publishing? could you be publishing? could they be publishing?  | 
Perfeito | Perfeito com V-ing | 
| could I have published? could you have published? could he have published? could we have published? could you have published? could they have published?  | could I have been publishing? could you have been publishing? could he have been publishing? could we have been publishing? could you have been publishing? could they have been publishing?  | 
Forma simple | Forma com V-ing | 
| couldn't I publish? couldn't you publish? couldn't he publish? couldn't we publish? couldn't you publish? couldn't they publish?  | couldn't I be publishing? couldn't you be publishing? couldn't he be publishing? couldn't we be publishing? couldn't you be publishing? couldn't they be publishing?  | 
Perfeito | Perfeito com V-ing | 
| couldn't I have published? couldn't you have published? couldn't he have published? couldn't we have published? couldn't you have published? couldn't they have published?  | couldn't I have been publishing? couldn't you have been publishing? couldn't he have been publishing? couldn't we have been publishing? couldn't you have been publishing? couldn't they have been publishing?  |