English verb conjugation
COULD TRENCH

Regular verb: trench - trenched - trenched

Affirmation

Simple form	V-ing form
I could trench you could trench he could trench we could trench you could trench they could trench	I could be trenching you could be trenching he could be trenching we could be trenching you could be trenching they could be trenching
Perfect	V-ing perfect
I could have trenched you could have trenched he could have trenched we could have trenched you could have trenched they could have trenched	I could have been trenching you could have been trenching he could have been trenching we could have been trenching you could have been trenching they could have been trenching

Negation

Simple form	V-ing form
I couldn't trench you couldn't trench he couldn't trench we couldn't trench you couldn't trench they couldn't trench	I couldn't be trenching you couldn't be trenching he couldn't be trenching we couldn't be trenching you couldn't be trenching they couldn't be trenching
Perfect	V-ing perfect
I couldn't have trenched you couldn't have trenched he couldn't have trenched we couldn't have trenched you couldn't have trenched they couldn't have trenched	I couldn't have been trenching you couldn't have been trenching he couldn't have been trenching we couldn't have been trenching you couldn't have been trenching they couldn't have been trenching

Interrogative form

Simple form	V-ing form
could I trench? could you trench? could he trench? could we trench? could you trench? could they trench?	could I be trenching? could you be trenching? could he be trenching? could we be trenching? could you be trenching? could they be trenching?
Perfect	V-ing perfect
could I have trenched? could you have trenched? could he have trenched? could we have trenched? could you have trenched? could they have trenched?	could I have been trenching? could you have been trenching? could he have been trenching? could we have been trenching? could you have been trenching? could they have been trenching?

Interro-negative form

Simple form	V-ing form
couldn't I trench? couldn't you trench? couldn't he trench? couldn't we trench? couldn't you trench? couldn't they trench?	couldn't I be trenching? couldn't you be trenching? couldn't he be trenching? couldn't we be trenching? couldn't you be trenching? couldn't they be trenching?
Perfect	V-ing perfect
couldn't I have trenched? couldn't you have trenched? couldn't he have trenched? couldn't we have trenched? couldn't you have trenched? couldn't they have trenched?	couldn't I have been trenching? couldn't you have been trenching? couldn't he have been trenching? couldn't we have been trenching? couldn't you have been trenching? couldn't they have been trenching?