English verb conjugation
MAY PRECHECK

Regular verb: precheck - prechecked - prechecked

Affirmation

Simple form	V-ing form
I may precheck you may precheck she may precheck we may precheck you may precheck they may precheck	I may be prechecking you may be prechecking she may be prechecking we may be prechecking you may be prechecking they may be prechecking
Perfect	V-ing perfect
I may have prechecked you may have prechecked she may have prechecked we may have prechecked you may have prechecked they may have prechecked	I may have been prechecking you may have been prechecking she may have been prechecking we may have been prechecking you may have been prechecking they may have been prechecking

Negation

Simple form	V-ing form
I may not precheck you may not precheck she may not precheck we may not precheck you may not precheck they may not precheck	I may not be prechecking you may not be prechecking she may not be prechecking we may not be prechecking you may not be prechecking they may not be prechecking
Perfect	V-ing perfect
I may not have prechecked you may not have prechecked she may not have prechecked we may not have prechecked you may not have prechecked they may not have prechecked	I may not have been prechecking you may not have been prechecking she may not have been prechecking we may not have been prechecking you may not have been prechecking they may not have been prechecking

Interrogative form

Simple form	V-ing form
may I precheck? may you precheck? may she precheck? may we precheck? may you precheck? may they precheck?	may I be prechecking? may you be prechecking? may she be prechecking? may we be prechecking? may you be prechecking? may they be prechecking?
Perfect	V-ing perfect
may I have prechecked? may you have prechecked? may she have prechecked? may we have prechecked? may you have prechecked? may they have prechecked?	may I have been prechecking? may you have been prechecking? may she have been prechecking? may we have been prechecking? may you have been prechecking? may they have been prechecking?

Interro-negative form

Simple form	V-ing form
may I not precheck? may you not precheck? may she not precheck? may we not precheck? may you not precheck? may they not precheck?	may I not be prechecking? may you not be prechecking? may she not be prechecking? may we not be prechecking? may you not be prechecking? may they not be prechecking?
Perfect	V-ing perfect
may I not have prechecked? may you not have prechecked? may she not have prechecked? may we not have prechecked? may you not have prechecked? may they not have prechecked?	may I not have been prechecking? may you not have been prechecking? may she not have been prechecking? may we not have been prechecking? may you not have been prechecking? may they not have been prechecking?