Regular verb: substitute - substituted - substituted
Simple form | V-ing form |
I may substitute you may substitute he may substitute we may substitute you may substitute they may substitute | I may be substituting you may be substituting he may be substituting we may be substituting you may be substituting they may be substituting |
Perfect | V-ing perfect |
I may have substituted you may have substituted he may have substituted we may have substituted you may have substituted they may have substituted | I may have been substituting you may have been substituting he may have been substituting we may have been substituting you may have been substituting they may have been substituting |
Simple form | V-ing form |
I may not substitute you may not substitute he may not substitute we may not substitute you may not substitute they may not substitute | I may not be substituting you may not be substituting he may not be substituting we may not be substituting you may not be substituting they may not be substituting |
Perfect | V-ing perfect |
I may not have substituted you may not have substituted he may not have substituted we may not have substituted you may not have substituted they may not have substituted | I may not have been substituting you may not have been substituting he may not have been substituting we may not have been substituting you may not have been substituting they may not have been substituting |
Simple form | V-ing form |
may I substitute? may you substitute? may he substitute? may we substitute? may you substitute? may they substitute? | may I be substituting? may you be substituting? may he be substituting? may we be substituting? may you be substituting? may they be substituting? |
Perfect | V-ing perfect |
may I have substituted? may you have substituted? may he have substituted? may we have substituted? may you have substituted? may they have substituted? | may I have been substituting? may you have been substituting? may he have been substituting? may we have been substituting? may you have been substituting? may they have been substituting? |
Simple form | V-ing form |
may I not substitute? may you not substitute? may he not substitute? may we not substitute? may you not substitute? may they not substitute? | may I not be substituting? may you not be substituting? may he not be substituting? may we not be substituting? may you not be substituting? may they not be substituting? |
Perfect | V-ing perfect |
may I not have substituted? may you not have substituted? may he not have substituted? may we not have substituted? may you not have substituted? may they not have substituted? | may I not have been substituting? may you not have been substituting? may he not have been substituting? may we not have been substituting? may you not have been substituting? may they not have been substituting? |