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 must not sing sing you must not sing sing he must not sing sing we must not sing sing you must not sing sing they must not sing sing | I must not be sing singing you must not be sing singing he must not be sing singing we must not be sing singing you must not be sing singing they must not be sing singing |
Perfect | V-ing perfect |
I must not have sing singed you must not have sing singed he must not have sing singed we must not have sing singed you must not have sing singed they must not have sing singed | I must not have been sing singing you must not have been sing singing he must not have been sing singing we must not have been sing singing you must not have been sing singing they must not 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 |
must I not sing sing? must you not sing sing? must he not sing sing? must we not sing sing? must you not sing sing? must they not sing sing? | must I not be sing singing? must you not be sing singing? must he not be sing singing? must we not be sing singing? must you not be sing singing? must they not be sing singing? |
Perfect | V-ing perfect |
must I not have sing singed? must you not have sing singed? must he not have sing singed? must we not have sing singed? must you not have sing singed? must they not have sing singed? | must I not have been sing singing? must you not have been sing singing? must he not have been sing singing? must we not have been sing singing? must you not have been sing singing? must they not have been sing singing? |