Regular verb: grease - greased - greased
Simple form | V-ing form |
I must grease you must grease he must grease we must grease you must grease they must grease | I must be greasing you must be greasing he must be greasing we must be greasing you must be greasing they must be greasing |
Perfect | V-ing perfect |
I must have greased you must have greased he must have greased we must have greased you must have greased they must have greased | I must have been greasing you must have been greasing he must have been greasing we must have been greasing you must have been greasing they must have been greasing |
Simple form | V-ing form |
I must not grease you must not grease he must not grease we must not grease you must not grease they must not grease | I must not be greasing you must not be greasing he must not be greasing we must not be greasing you must not be greasing they must not be greasing |
Perfect | V-ing perfect |
I must not have greased you must not have greased he must not have greased we must not have greased you must not have greased they must not have greased | I must not have been greasing you must not have been greasing he must not have been greasing we must not have been greasing you must not have been greasing they must not have been greasing |
Simple form | V-ing form |
must I grease? must you grease? must he grease? must we grease? must you grease? must they grease? | must I be greasing? must you be greasing? must he be greasing? must we be greasing? must you be greasing? must they be greasing? |
Perfect | V-ing perfect |
must I have greased? must you have greased? must he have greased? must we have greased? must you have greased? must they have greased? | must I have been greasing? must you have been greasing? must he have been greasing? must we have been greasing? must you have been greasing? must they have been greasing? |
Simple form | V-ing form |
must I not grease? must you not grease? must he not grease? must we not grease? must you not grease? must they not grease? | must I not be greasing? must you not be greasing? must he not be greasing? must we not be greasing? must you not be greasing? must they not be greasing? |
Perfect | V-ing perfect |
must I not have greased? must you not have greased? must he not have greased? must we not have greased? must you not have greased? must they not have greased? | must I not have been greasing? must you not have been greasing? must he not have been greasing? must we not have been greasing? must you not have been greasing? must they not have been greasing? |