English verb conjugation
COULD LANDMARK

Regular verb: landmark - landmarked - landmarked

Affirmation

Simple form	V-ing form
I could landmark you could landmark he could landmark we could landmark you could landmark they could landmark	I could be landmarking you could be landmarking he could be landmarking we could be landmarking you could be landmarking they could be landmarking
Perfect	V-ing perfect
I could have landmarked you could have landmarked he could have landmarked we could have landmarked you could have landmarked they could have landmarked	I could have been landmarking you could have been landmarking he could have been landmarking we could have been landmarking you could have been landmarking they could have been landmarking

Negation

Simple form	V-ing form
I couldn't landmark you couldn't landmark he couldn't landmark we couldn't landmark you couldn't landmark they couldn't landmark	I couldn't be landmarking you couldn't be landmarking he couldn't be landmarking we couldn't be landmarking you couldn't be landmarking they couldn't be landmarking
Perfect	V-ing perfect
I couldn't have landmarked you couldn't have landmarked he couldn't have landmarked we couldn't have landmarked you couldn't have landmarked they couldn't have landmarked	I couldn't have been landmarking you couldn't have been landmarking he couldn't have been landmarking we couldn't have been landmarking you couldn't have been landmarking they couldn't have been landmarking

Interrogative form

Simple form	V-ing form
could I landmark? could you landmark? could he landmark? could we landmark? could you landmark? could they landmark?	could I be landmarking? could you be landmarking? could he be landmarking? could we be landmarking? could you be landmarking? could they be landmarking?
Perfect	V-ing perfect
could I have landmarked? could you have landmarked? could he have landmarked? could we have landmarked? could you have landmarked? could they have landmarked?	could I have been landmarking? could you have been landmarking? could he have been landmarking? could we have been landmarking? could you have been landmarking? could they have been landmarking?

Interro-negative form

Simple form	V-ing form
couldn't I landmark? couldn't you landmark? couldn't he landmark? couldn't we landmark? couldn't you landmark? couldn't they landmark?	couldn't I be landmarking? couldn't you be landmarking? couldn't he be landmarking? couldn't we be landmarking? couldn't you be landmarking? couldn't they be landmarking?
Perfect	V-ing perfect
couldn't I have landmarked? couldn't you have landmarked? couldn't he have landmarked? couldn't we have landmarked? couldn't you have landmarked? couldn't they have landmarked?	couldn't I have been landmarking? couldn't you have been landmarking? couldn't he have been landmarking? couldn't we have been landmarking? couldn't you have been landmarking? couldn't they have been landmarking?