English verb conjugation
COULD LIASE

Regular verb: liase - liased - liased

Affirmation

Simple form	V-ing form
I could liase you could liase he could liase we could liase you could liase they could liase	I could be liasing you could be liasing he could be liasing we could be liasing you could be liasing they could be liasing
Perfect	V-ing perfect
I could have liased you could have liased he could have liased we could have liased you could have liased they could have liased	I could have been liasing you could have been liasing he could have been liasing we could have been liasing you could have been liasing they could have been liasing

Negation

Simple form	V-ing form
I couldn't liase you couldn't liase he couldn't liase we couldn't liase you couldn't liase they couldn't liase	I couldn't be liasing you couldn't be liasing he couldn't be liasing we couldn't be liasing you couldn't be liasing they couldn't be liasing
Perfect	V-ing perfect
I couldn't have liased you couldn't have liased he couldn't have liased we couldn't have liased you couldn't have liased they couldn't have liased	I couldn't have been liasing you couldn't have been liasing he couldn't have been liasing we couldn't have been liasing you couldn't have been liasing they couldn't have been liasing

Interrogative form

Simple form	V-ing form
could I liase? could you liase? could he liase? could we liase? could you liase? could they liase?	could I be liasing? could you be liasing? could he be liasing? could we be liasing? could you be liasing? could they be liasing?
Perfect	V-ing perfect
could I have liased? could you have liased? could he have liased? could we have liased? could you have liased? could they have liased?	could I have been liasing? could you have been liasing? could he have been liasing? could we have been liasing? could you have been liasing? could they have been liasing?

Interro-negative form

Simple form	V-ing form
couldn't I liase? couldn't you liase? couldn't he liase? couldn't we liase? couldn't you liase? couldn't they liase?	couldn't I be liasing? couldn't you be liasing? couldn't he be liasing? couldn't we be liasing? couldn't you be liasing? couldn't they be liasing?
Perfect	V-ing perfect
couldn't I have liased? couldn't you have liased? couldn't he have liased? couldn't we have liased? couldn't you have liased? couldn't they have liased?	couldn't I have been liasing? couldn't you have been liasing? couldn't he have been liasing? couldn't we have been liasing? couldn't you have been liasing? couldn't they have been liasing?