Verbo regular: stack - stacked - stacked
Forma simple | Forma con V-ing |
I must stack you must stack she must stack we must stack you must stack they must stack | I must be stacking you must be stacking she must be stacking we must be stacking you must be stacking they must be stacking |
Perfecto | Perfecto con V-ing |
I must have stacked you must have stacked she must have stacked we must have stacked you must have stacked they must have stacked | I must have been stacking you must have been stacking she must have been stacking we must have been stacking you must have been stacking they must have been stacking |
Forma simple | Forma con V-ing |
I mustn't stack you mustn't stack she mustn't stack we mustn't stack you mustn't stack they mustn't stack | I mustn't be stacking you mustn't be stacking she mustn't be stacking we mustn't be stacking you mustn't be stacking they mustn't be stacking |
Perfecto | Perfecto con V-ing |
I mustn't have stacked you mustn't have stacked she mustn't have stacked we mustn't have stacked you mustn't have stacked they mustn't have stacked | I mustn't have been stacking you mustn't have been stacking she mustn't have been stacking we mustn't have been stacking you mustn't have been stacking they mustn't have been stacking |
Forma simple | Forma con V-ing |
must I stack? must you stack? must she stack? must we stack? must you stack? must they stack? | must I be stacking? must you be stacking? must she be stacking? must we be stacking? must you be stacking? must they be stacking? |
Perfecto | Perfecto con V-ing |
must I have stacked? must you have stacked? must she have stacked? must we have stacked? must you have stacked? must they have stacked? | must I have been stacking? must you have been stacking? must she have been stacking? must we have been stacking? must you have been stacking? must they have been stacking? |
Forma simple | Forma con V-ing |
mustn't I stack? mustn't you stack? mustn't she stack? mustn't we stack? mustn't you stack? mustn't they stack? | mustn't I be stacking? mustn't you be stacking? mustn't she be stacking? mustn't we be stacking? mustn't you be stacking? mustn't they be stacking? |
Perfecto | Perfecto con V-ing |
mustn't I have stacked? mustn't you have stacked? mustn't she have stacked? mustn't we have stacked? mustn't you have stacked? mustn't they have stacked? | mustn't I have been stacking? mustn't you have been stacking? mustn't she have been stacking? mustn't we have been stacking? mustn't you have been stacking? mustn't they have been stacking? |