English verb conjugation
COULD LATCH

Regular verb: latch - latched - latched

Affirmation

Simple form	V-ing form
I could latch you could latch he could latch we could latch you could latch they could latch	I could be latching you could be latching he could be latching we could be latching you could be latching they could be latching
Perfect	V-ing perfect
I could have latched you could have latched he could have latched we could have latched you could have latched they could have latched	I could have been latching you could have been latching he could have been latching we could have been latching you could have been latching they could have been latching

Negation

Simple form	V-ing form
I could not latch you could not latch he could not latch we could not latch you could not latch they could not latch	I could not be latching you could not be latching he could not be latching we could not be latching you could not be latching they could not be latching
Perfect	V-ing perfect
I could not have latched you could not have latched he could not have latched we could not have latched you could not have latched they could not have latched	I could not have been latching you could not have been latching he could not have been latching we could not have been latching you could not have been latching they could not have been latching

Interrogative form

Simple form	V-ing form
could I latch? could you latch? could he latch? could we latch? could you latch? could they latch?	could I be latching? could you be latching? could he be latching? could we be latching? could you be latching? could they be latching?
Perfect	V-ing perfect
could I have latched? could you have latched? could he have latched? could we have latched? could you have latched? could they have latched?	could I have been latching? could you have been latching? could he have been latching? could we have been latching? could you have been latching? could they have been latching?

Interro-negative form

Simple form	V-ing form
could I not latch? could you not latch? could he not latch? could we not latch? could you not latch? could they not latch?	could I not be latching? could you not be latching? could he not be latching? could we not be latching? could you not be latching? could they not be latching?
Perfect	V-ing perfect
could I not have latched? could you not have latched? could he not have latched? could we not have latched? could you not have latched? could they not have latched?	could I not have been latching? could you not have been latching? could he not have been latching? could we not have been latching? could you not have been latching? could they not have been latching?