I may landmark you may landmark she may landmark we may landmark you may landmark they may landmark
V-ing form
I may be landmarking you may be landmarking she may be landmarking we may be landmarking you may be landmarking they may be landmarking
Perfect
I may have landmarked you may have landmarked she may have landmarked we may have landmarked you may have landmarked they may have landmarked
V-ing perfect
I may have been landmarking you may have been landmarking she may have been landmarking we may have been landmarking you may have been landmarking they may have been landmarking
Negation
Simple form
I mayn't landmark you mayn't landmark she mayn't landmark we mayn't landmark you mayn't landmark they mayn't landmark
V-ing form
I mayn't be landmarking you mayn't be landmarking she mayn't be landmarking we mayn't be landmarking you mayn't be landmarking they mayn't be landmarking
Perfect
I mayn't have landmarked you mayn't have landmarked she mayn't have landmarked we mayn't have landmarked you mayn't have landmarked they mayn't have landmarked
V-ing perfect
I mayn't have been landmarking you mayn't have been landmarking she mayn't have been landmarking we mayn't have been landmarking you mayn't have been landmarking they mayn't have been landmarking
Interrogative form
Simple form
may I landmark? may you landmark? may she landmark? may we landmark? may you landmark? may they landmark?
V-ing form
may I be landmarking? may you be landmarking? may she be landmarking? may we be landmarking? may you be landmarking? may they be landmarking?
Perfect
may I have landmarked? may you have landmarked? may she have landmarked? may we have landmarked? may you have landmarked? may they have landmarked?
V-ing perfect
may I have been landmarking? may you have been landmarking? may she have been landmarking? may we have been landmarking? may you have been landmarking? may they have been landmarking?
Interro-negative form
Simple form
mayn't I landmark? mayn't you landmark? mayn't she landmark? mayn't we landmark? mayn't you landmark? mayn't they landmark?
V-ing form
mayn't I be landmarking? mayn't you be landmarking? mayn't she be landmarking? mayn't we be landmarking? mayn't you be landmarking? mayn't they be landmarking?
Perfect
mayn't I have landmarked? mayn't you have landmarked? mayn't she have landmarked? mayn't we have landmarked? mayn't you have landmarked? mayn't they have landmarked?
V-ing perfect
mayn't I have been landmarking? mayn't you have been landmarking? mayn't she have been landmarking? mayn't we have been landmarking? mayn't you have been landmarking? mayn't they have been landmarking?