Regular verb: prefer - preferred - preferred
Simple form | V-ing form |
I must prefer you must prefer she must prefer we must prefer you must prefer they must prefer | I must be preferring you must be preferring she must be preferring we must be preferring you must be preferring they must be preferring |
Perfect | V-ing perfect |
I must have preferred you must have preferred she must have preferred we must have preferred you must have preferred they must have preferred | I must have been preferring you must have been preferring she must have been preferring we must have been preferring you must have been preferring they must have been preferring |
Simple form | V-ing form |
I must not prefer you must not prefer she must not prefer we must not prefer you must not prefer they must not prefer | I must not be preferring you must not be preferring she must not be preferring we must not be preferring you must not be preferring they must not be preferring |
Perfect | V-ing perfect |
I must not have preferred you must not have preferred she must not have preferred we must not have preferred you must not have preferred they must not have preferred | I must not have been preferring you must not have been preferring she must not have been preferring we must not have been preferring you must not have been preferring they must not have been preferring |
Simple form | V-ing form |
must I prefer? must you prefer? must she prefer? must we prefer? must you prefer? must they prefer? | must I be preferring? must you be preferring? must she be preferring? must we be preferring? must you be preferring? must they be preferring? |
Perfect | V-ing perfect |
must I have preferred? must you have preferred? must she have preferred? must we have preferred? must you have preferred? must they have preferred? | must I have been preferring? must you have been preferring? must she have been preferring? must we have been preferring? must you have been preferring? must they have been preferring? |
Simple form | V-ing form |
must I not prefer? must you not prefer? must she not prefer? must we not prefer? must you not prefer? must they not prefer? | must I not be preferring? must you not be preferring? must she not be preferring? must we not be preferring? must you not be preferring? must they not be preferring? |
Perfect | V-ing perfect |
must I not have preferred? must you not have preferred? must she not have preferred? must we not have preferred? must you not have preferred? must they not have preferred? | must I not have been preferring? must you not have been preferring? must she not have been preferring? must we not have been preferring? must you not have been preferring? must they not have been preferring? |