Regular verb: shorten - shortened - shortened
Simple form | V-ing form |
I must shorten you must shorten she must shorten we must shorten you must shorten they must shorten | I must be shortening you must be shortening she must be shortening we must be shortening you must be shortening they must be shortening |
Perfect | V-ing perfect |
I must have shortened you must have shortened she must have shortened we must have shortened you must have shortened they must have shortened | I must have been shortening you must have been shortening she must have been shortening we must have been shortening you must have been shortening they must have been shortening |
Simple form | V-ing form |
I must not shorten you must not shorten she must not shorten we must not shorten you must not shorten they must not shorten | I must not be shortening you must not be shortening she must not be shortening we must not be shortening you must not be shortening they must not be shortening |
Perfect | V-ing perfect |
I must not have shortened you must not have shortened she must not have shortened we must not have shortened you must not have shortened they must not have shortened | I must not have been shortening you must not have been shortening she must not have been shortening we must not have been shortening you must not have been shortening they must not have been shortening |
Simple form | V-ing form |
must I shorten? must you shorten? must she shorten? must we shorten? must you shorten? must they shorten? | must I be shortening? must you be shortening? must she be shortening? must we be shortening? must you be shortening? must they be shortening? |
Perfect | V-ing perfect |
must I have shortened? must you have shortened? must she have shortened? must we have shortened? must you have shortened? must they have shortened? | must I have been shortening? must you have been shortening? must she have been shortening? must we have been shortening? must you have been shortening? must they have been shortening? |
Simple form | V-ing form |
must I not shorten? must you not shorten? must she not shorten? must we not shorten? must you not shorten? must they not shorten? | must I not be shortening? must you not be shortening? must she not be shortening? must we not be shortening? must you not be shortening? must they not be shortening? |
Perfect | V-ing perfect |
must I not have shortened? must you not have shortened? must she not have shortened? must we not have shortened? must you not have shortened? must they not have shortened? | must I not have been shortening? must you not have been shortening? must she not have been shortening? must we not have been shortening? must you not have been shortening? must they not have been shortening? |