English verb conjugation
COULD FLABBERGAST

Regular verb: flabbergast - flabbergasted - flabbergasted

Affirmation

Simple form	V-ing form
I could flabbergast you could flabbergast he could flabbergast we could flabbergast you could flabbergast they could flabbergast	I could be flabbergasting you could be flabbergasting he could be flabbergasting we could be flabbergasting you could be flabbergasting they could be flabbergasting
Perfect	V-ing perfect
I could have flabbergasted you could have flabbergasted he could have flabbergasted we could have flabbergasted you could have flabbergasted they could have flabbergasted	I could have been flabbergasting you could have been flabbergasting he could have been flabbergasting we could have been flabbergasting you could have been flabbergasting they could have been flabbergasting

Negation

Simple form	V-ing form
I couldn't flabbergast you couldn't flabbergast he couldn't flabbergast we couldn't flabbergast you couldn't flabbergast they couldn't flabbergast	I couldn't be flabbergasting you couldn't be flabbergasting he couldn't be flabbergasting we couldn't be flabbergasting you couldn't be flabbergasting they couldn't be flabbergasting
Perfect	V-ing perfect
I couldn't have flabbergasted you couldn't have flabbergasted he couldn't have flabbergasted we couldn't have flabbergasted you couldn't have flabbergasted they couldn't have flabbergasted	I couldn't have been flabbergasting you couldn't have been flabbergasting he couldn't have been flabbergasting we couldn't have been flabbergasting you couldn't have been flabbergasting they couldn't have been flabbergasting

Interrogative form

Simple form	V-ing form
could I flabbergast? could you flabbergast? could he flabbergast? could we flabbergast? could you flabbergast? could they flabbergast?	could I be flabbergasting? could you be flabbergasting? could he be flabbergasting? could we be flabbergasting? could you be flabbergasting? could they be flabbergasting?
Perfect	V-ing perfect
could I have flabbergasted? could you have flabbergasted? could he have flabbergasted? could we have flabbergasted? could you have flabbergasted? could they have flabbergasted?	could I have been flabbergasting? could you have been flabbergasting? could he have been flabbergasting? could we have been flabbergasting? could you have been flabbergasting? could they have been flabbergasting?

Interro-negative form

Simple form	V-ing form
couldn't I flabbergast? couldn't you flabbergast? couldn't he flabbergast? couldn't we flabbergast? couldn't you flabbergast? couldn't they flabbergast?	couldn't I be flabbergasting? couldn't you be flabbergasting? couldn't he be flabbergasting? couldn't we be flabbergasting? couldn't you be flabbergasting? couldn't they be flabbergasting?
Perfect	V-ing perfect
couldn't I have flabbergasted? couldn't you have flabbergasted? couldn't he have flabbergasted? couldn't we have flabbergasted? couldn't you have flabbergasted? couldn't they have flabbergasted?	couldn't I have been flabbergasting? couldn't you have been flabbergasting? couldn't he have been flabbergasting? couldn't we have been flabbergasting? couldn't you have been flabbergasting? couldn't they have been flabbergasting?