Regular verb: sing sing - sing singed - sing singed
Warning, this verb may not exist. Conjugation is given as example.
Simple form | V-ing form |
I must sing sing you must sing sing he must sing sing we must sing sing you must sing sing they must sing sing | I must be sing singing you must be sing singing he must be sing singing we must be sing singing you must be sing singing they must be sing singing |
Perfect | V-ing perfect |
I must have sing singed you must have sing singed he must have sing singed we must have sing singed you must have sing singed they must have sing singed | I must have been sing singing you must have been sing singing he must have been sing singing we must have been sing singing you must have been sing singing they must have been sing singing |
Simple form | V-ing form |
I mustn't sing sing you mustn't sing sing he mustn't sing sing we mustn't sing sing you mustn't sing sing they mustn't sing sing | I mustn't be sing singing you mustn't be sing singing he mustn't be sing singing we mustn't be sing singing you mustn't be sing singing they mustn't be sing singing |
Perfect | V-ing perfect |
I mustn't have sing singed you mustn't have sing singed he mustn't have sing singed we mustn't have sing singed you mustn't have sing singed they mustn't have sing singed | I mustn't have been sing singing you mustn't have been sing singing he mustn't have been sing singing we mustn't have been sing singing you mustn't have been sing singing they mustn't have been sing singing |
Simple form | V-ing form |
must I sing sing? must you sing sing? must he sing sing? must we sing sing? must you sing sing? must they sing sing? | must I be sing singing? must you be sing singing? must he be sing singing? must we be sing singing? must you be sing singing? must they be sing singing? |
Perfect | V-ing perfect |
must I have sing singed? must you have sing singed? must he have sing singed? must we have sing singed? must you have sing singed? must they have sing singed? | must I have been sing singing? must you have been sing singing? must he have been sing singing? must we have been sing singing? must you have been sing singing? must they have been sing singing? |
Simple form | V-ing form |
mustn't I sing sing? mustn't you sing sing? mustn't he sing sing? mustn't we sing sing? mustn't you sing sing? mustn't they sing sing? | mustn't I be sing singing? mustn't you be sing singing? mustn't he be sing singing? mustn't we be sing singing? mustn't you be sing singing? mustn't they be sing singing? |
Perfect | V-ing perfect |
mustn't I have sing singed? mustn't you have sing singed? mustn't he have sing singed? mustn't we have sing singed? mustn't you have sing singed? mustn't they have sing singed? | mustn't I have been sing singing? mustn't you have been sing singing? mustn't he have been sing singing? mustn't we have been sing singing? mustn't you have been sing singing? mustn't they have been sing singing? |