Regular verb: burble - burbled - burbled
Simple form | V-ing form |
I must burble you must burble he must burble we must burble you must burble they must burble | I must be burbling you must be burbling he must be burbling we must be burbling you must be burbling they must be burbling |
Perfect | V-ing perfect |
I must have burbled you must have burbled he must have burbled we must have burbled you must have burbled they must have burbled | I must have been burbling you must have been burbling he must have been burbling we must have been burbling you must have been burbling they must have been burbling |
Simple form | V-ing form |
I mustn't burble you mustn't burble he mustn't burble we mustn't burble you mustn't burble they mustn't burble | I mustn't be burbling you mustn't be burbling he mustn't be burbling we mustn't be burbling you mustn't be burbling they mustn't be burbling |
Perfect | V-ing perfect |
I mustn't have burbled you mustn't have burbled he mustn't have burbled we mustn't have burbled you mustn't have burbled they mustn't have burbled | I mustn't have been burbling you mustn't have been burbling he mustn't have been burbling we mustn't have been burbling you mustn't have been burbling they mustn't have been burbling |
Simple form | V-ing form |
must I burble? must you burble? must he burble? must we burble? must you burble? must they burble? | must I be burbling? must you be burbling? must he be burbling? must we be burbling? must you be burbling? must they be burbling? |
Perfect | V-ing perfect |
must I have burbled? must you have burbled? must he have burbled? must we have burbled? must you have burbled? must they have burbled? | must I have been burbling? must you have been burbling? must he have been burbling? must we have been burbling? must you have been burbling? must they have been burbling? |
Simple form | V-ing form |
mustn't I burble? mustn't you burble? mustn't he burble? mustn't we burble? mustn't you burble? mustn't they burble? | mustn't I be burbling? mustn't you be burbling? mustn't he be burbling? mustn't we be burbling? mustn't you be burbling? mustn't they be burbling? |
Perfect | V-ing perfect |
mustn't I have burbled? mustn't you have burbled? mustn't he have burbled? mustn't we have burbled? mustn't you have burbled? mustn't they have burbled? | mustn't I have been burbling? mustn't you have been burbling? mustn't he have been burbling? mustn't we have been burbling? mustn't you have been burbling? mustn't they have been burbling? |