Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could hike.march you could hike.march he could hike.march we could hike.march you could hike.march they could hike.march
V-ing form
I could be hike.marching you could be hike.marching he could be hike.marching we could be hike.marching you could be hike.marching they could be hike.marching
Perfect
I could have hike.marched you could have hike.marched he could have hike.marched we could have hike.marched you could have hike.marched they could have hike.marched
V-ing perfect
I could have been hike.marching you could have been hike.marching he could have been hike.marching we could have been hike.marching you could have been hike.marching they could have been hike.marching
Negation
Simple form
I couldn't hike.march you couldn't hike.march he couldn't hike.march we couldn't hike.march you couldn't hike.march they couldn't hike.march
V-ing form
I couldn't be hike.marching you couldn't be hike.marching he couldn't be hike.marching we couldn't be hike.marching you couldn't be hike.marching they couldn't be hike.marching
Perfect
I couldn't have hike.marched you couldn't have hike.marched he couldn't have hike.marched we couldn't have hike.marched you couldn't have hike.marched they couldn't have hike.marched
V-ing perfect
I couldn't have been hike.marching you couldn't have been hike.marching he couldn't have been hike.marching we couldn't have been hike.marching you couldn't have been hike.marching they couldn't have been hike.marching
Interrogative form
Simple form
could I hike.march? could you hike.march? could he hike.march? could we hike.march? could you hike.march? could they hike.march?
V-ing form
could I be hike.marching? could you be hike.marching? could he be hike.marching? could we be hike.marching? could you be hike.marching? could they be hike.marching?
Perfect
could I have hike.marched? could you have hike.marched? could he have hike.marched? could we have hike.marched? could you have hike.marched? could they have hike.marched?
V-ing perfect
could I have been hike.marching? could you have been hike.marching? could he have been hike.marching? could we have been hike.marching? could you have been hike.marching? could they have been hike.marching?
Interro-negative form
Simple form
couldn't I hike.march? couldn't you hike.march? couldn't he hike.march? couldn't we hike.march? couldn't you hike.march? couldn't they hike.march?
V-ing form
couldn't I be hike.marching? couldn't you be hike.marching? couldn't he be hike.marching? couldn't we be hike.marching? couldn't you be hike.marching? couldn't they be hike.marching?
Perfect
couldn't I have hike.marched? couldn't you have hike.marched? couldn't he have hike.marched? couldn't we have hike.marched? couldn't you have hike.marched? couldn't they have hike.marched?
V-ing perfect
couldn't I have been hike.marching? couldn't you have been hike.marching? couldn't he have been hike.marching? couldn't we have been hike.marching? couldn't you have been hike.marching? couldn't they have been hike.marching?