Regular verb: fork - forked - forked
Simple form | V-ing form |
I must fork you must fork she must fork we must fork you must fork they must fork | I must be forking you must be forking she must be forking we must be forking you must be forking they must be forking |
Perfect | V-ing perfect |
I must have forked you must have forked she must have forked we must have forked you must have forked they must have forked | I must have been forking you must have been forking she must have been forking we must have been forking you must have been forking they must have been forking |
Simple form | V-ing form |
I must not fork you must not fork she must not fork we must not fork you must not fork they must not fork | I must not be forking you must not be forking she must not be forking we must not be forking you must not be forking they must not be forking |
Perfect | V-ing perfect |
I must not have forked you must not have forked she must not have forked we must not have forked you must not have forked they must not have forked | I must not have been forking you must not have been forking she must not have been forking we must not have been forking you must not have been forking they must not have been forking |
Simple form | V-ing form |
must I fork? must you fork? must she fork? must we fork? must you fork? must they fork? | must I be forking? must you be forking? must she be forking? must we be forking? must you be forking? must they be forking? |
Perfect | V-ing perfect |
must I have forked? must you have forked? must she have forked? must we have forked? must you have forked? must they have forked? | must I have been forking? must you have been forking? must she have been forking? must we have been forking? must you have been forking? must they have been forking? |
Simple form | V-ing form |
must I not fork? must you not fork? must she not fork? must we not fork? must you not fork? must they not fork? | must I not be forking? must you not be forking? must she not be forking? must we not be forking? must you not be forking? must they not be forking? |
Perfect | V-ing perfect |
must I not have forked? must you not have forked? must she not have forked? must we not have forked? must you not have forked? must they not have forked? | must I not have been forking? must you not have been forking? must she not have been forking? must we not have been forking? must you not have been forking? must they not have been forking? |