English verb conjugation
COULD LATCH

Regular verb: latch - latched - latched

Affirmation

Simple form	V-ing form
I could latch you could latch she could latch we could latch you could latch they could latch	I could be latching you could be latching she 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 she 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 she 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 couldn't latch you couldn't latch she couldn't latch we couldn't latch you couldn't latch they couldn't latch	I couldn't be latching you couldn't be latching she couldn't be latching we couldn't be latching you couldn't be latching they couldn't be latching
Perfect	V-ing perfect
I couldn't have latched you couldn't have latched she couldn't have latched we couldn't have latched you couldn't have latched they couldn't have latched	I couldn't have been latching you couldn't have been latching she couldn't have been latching we couldn't have been latching you couldn't have been latching they couldn't have been latching

Interrogative form

Simple form	V-ing form
could I latch? could you latch? could she latch? could we latch? could you latch? could they latch?	could I be latching? could you be latching? could she 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 she 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 she 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
couldn't I latch? couldn't you latch? couldn't she latch? couldn't we latch? couldn't you latch? couldn't they latch?	couldn't I be latching? couldn't you be latching? couldn't she be latching? couldn't we be latching? couldn't you be latching? couldn't they be latching?
Perfect	V-ing perfect
couldn't I have latched? couldn't you have latched? couldn't she have latched? couldn't we have latched? couldn't you have latched? couldn't they have latched?	couldn't I have been latching? couldn't you have been latching? couldn't she have been latching? couldn't we have been latching? couldn't you have been latching? couldn't they have been latching?