
Verbo regolare: replace - replaced - replaced
Forma semplice | Forma con V-ing | 
| I must replace you must replace she must replace we must replace you must replace they must replace  | I must be replacing you must be replacing she must be replacing we must be replacing you must be replacing they must be replacing  | 
Perfetto | Perfetto con V-ing | 
| I must have replaced you must have replaced she must have replaced we must have replaced you must have replaced they must have replaced  | I must have been replacing you must have been replacing she must have been replacing we must have been replacing you must have been replacing they must have been replacing  | 
Forma semplice | Forma con V-ing | 
| I mustn't replace you mustn't replace she mustn't replace we mustn't replace you mustn't replace they mustn't replace  | I mustn't be replacing you mustn't be replacing she mustn't be replacing we mustn't be replacing you mustn't be replacing they mustn't be replacing  | 
Perfetto | Perfetto con V-ing | 
| I mustn't have replaced you mustn't have replaced she mustn't have replaced we mustn't have replaced you mustn't have replaced they mustn't have replaced  | I mustn't have been replacing you mustn't have been replacing she mustn't have been replacing we mustn't have been replacing you mustn't have been replacing they mustn't have been replacing  | 
Forma semplice | Forma con V-ing | 
| must I replace? must you replace? must she replace? must we replace? must you replace? must they replace?  | must I be replacing? must you be replacing? must she be replacing? must we be replacing? must you be replacing? must they be replacing?  | 
Perfetto | Perfetto con V-ing | 
| must I have replaced? must you have replaced? must she have replaced? must we have replaced? must you have replaced? must they have replaced?  | must I have been replacing? must you have been replacing? must she have been replacing? must we have been replacing? must you have been replacing? must they have been replacing?  | 
Forma semplice | Forma con V-ing | 
| mustn't I replace? mustn't you replace? mustn't she replace? mustn't we replace? mustn't you replace? mustn't they replace?  | mustn't I be replacing? mustn't you be replacing? mustn't she be replacing? mustn't we be replacing? mustn't you be replacing? mustn't they be replacing?  | 
Perfetto | Perfetto con V-ing | 
| mustn't I have replaced? mustn't you have replaced? mustn't she have replaced? mustn't we have replaced? mustn't you have replaced? mustn't they have replaced?  | mustn't I have been replacing? mustn't you have been replacing? mustn't she have been replacing? mustn't we have been replacing? mustn't you have been replacing? mustn't they have been replacing?  |