Regular verb: trephine - trephined - trephined
Simple form | V-ing form |
I must trephine you must trephine she must trephine we must trephine you must trephine they must trephine | I must be trephining you must be trephining she must be trephining we must be trephining you must be trephining they must be trephining |
Perfect | V-ing perfect |
I must have trephined you must have trephined she must have trephined we must have trephined you must have trephined they must have trephined | I must have been trephining you must have been trephining she must have been trephining we must have been trephining you must have been trephining they must have been trephining |
Simple form | V-ing form |
I mustn't trephine you mustn't trephine she mustn't trephine we mustn't trephine you mustn't trephine they mustn't trephine | I mustn't be trephining you mustn't be trephining she mustn't be trephining we mustn't be trephining you mustn't be trephining they mustn't be trephining |
Perfect | V-ing perfect |
I mustn't have trephined you mustn't have trephined she mustn't have trephined we mustn't have trephined you mustn't have trephined they mustn't have trephined | I mustn't have been trephining you mustn't have been trephining she mustn't have been trephining we mustn't have been trephining you mustn't have been trephining they mustn't have been trephining |
Simple form | V-ing form |
must I trephine? must you trephine? must she trephine? must we trephine? must you trephine? must they trephine? | must I be trephining? must you be trephining? must she be trephining? must we be trephining? must you be trephining? must they be trephining? |
Perfect | V-ing perfect |
must I have trephined? must you have trephined? must she have trephined? must we have trephined? must you have trephined? must they have trephined? | must I have been trephining? must you have been trephining? must she have been trephining? must we have been trephining? must you have been trephining? must they have been trephining? |
Simple form | V-ing form |
mustn't I trephine? mustn't you trephine? mustn't she trephine? mustn't we trephine? mustn't you trephine? mustn't they trephine? | mustn't I be trephining? mustn't you be trephining? mustn't she be trephining? mustn't we be trephining? mustn't you be trephining? mustn't they be trephining? |
Perfect | V-ing perfect |
mustn't I have trephined? mustn't you have trephined? mustn't she have trephined? mustn't we have trephined? mustn't you have trephined? mustn't they have trephined? | mustn't I have been trephining? mustn't you have been trephining? mustn't she have been trephining? mustn't we have been trephining? mustn't you have been trephining? mustn't they have been trephining? |