Regular verb: back - backed - backed
Simple form | V-ing form |
I may back you may back she may back we may back you may back they may back | I may be backing you may be backing she may be backing we may be backing you may be backing they may be backing |
Perfect | V-ing perfect |
I may have backed you may have backed she may have backed we may have backed you may have backed they may have backed | I may have been backing you may have been backing she may have been backing we may have been backing you may have been backing they may have been backing |
Simple form | V-ing form |
I mayn't back you mayn't back she mayn't back we mayn't back you mayn't back they mayn't back | I mayn't be backing you mayn't be backing she mayn't be backing we mayn't be backing you mayn't be backing they mayn't be backing |
Perfect | V-ing perfect |
I mayn't have backed you mayn't have backed she mayn't have backed we mayn't have backed you mayn't have backed they mayn't have backed | I mayn't have been backing you mayn't have been backing she mayn't have been backing we mayn't have been backing you mayn't have been backing they mayn't have been backing |
Simple form | V-ing form |
may I back? may you back? may she back? may we back? may you back? may they back? | may I be backing? may you be backing? may she be backing? may we be backing? may you be backing? may they be backing? |
Perfect | V-ing perfect |
may I have backed? may you have backed? may she have backed? may we have backed? may you have backed? may they have backed? | may I have been backing? may you have been backing? may she have been backing? may we have been backing? may you have been backing? may they have been backing? |
Simple form | V-ing form |
mayn't I back? mayn't you back? mayn't she back? mayn't we back? mayn't you back? mayn't they back? | mayn't I be backing? mayn't you be backing? mayn't she be backing? mayn't we be backing? mayn't you be backing? mayn't they be backing? |
Perfect | V-ing perfect |
mayn't I have backed? mayn't you have backed? mayn't she have backed? mayn't we have backed? mayn't you have backed? mayn't they have backed? | mayn't I have been backing? mayn't you have been backing? mayn't she have been backing? mayn't we have been backing? mayn't you have been backing? mayn't they have been backing? |