I could galumph you could galumph she could galumph we could galumph you could galumph they could galumph
V-ing form
I could be galumphing you could be galumphing she could be galumphing we could be galumphing you could be galumphing they could be galumphing
Perfect
I could have galumphed you could have galumphed she could have galumphed we could have galumphed you could have galumphed they could have galumphed
V-ing perfect
I could have been galumphing you could have been galumphing she could have been galumphing we could have been galumphing you could have been galumphing they could have been galumphing
Negation
Simple form
I couldn't galumph you couldn't galumph she couldn't galumph we couldn't galumph you couldn't galumph they couldn't galumph
V-ing form
I couldn't be galumphing you couldn't be galumphing she couldn't be galumphing we couldn't be galumphing you couldn't be galumphing they couldn't be galumphing
Perfect
I couldn't have galumphed you couldn't have galumphed she couldn't have galumphed we couldn't have galumphed you couldn't have galumphed they couldn't have galumphed
V-ing perfect
I couldn't have been galumphing you couldn't have been galumphing she couldn't have been galumphing we couldn't have been galumphing you couldn't have been galumphing they couldn't have been galumphing
Interrogative form
Simple form
could I galumph? could you galumph? could she galumph? could we galumph? could you galumph? could they galumph?
V-ing form
could I be galumphing? could you be galumphing? could she be galumphing? could we be galumphing? could you be galumphing? could they be galumphing?
Perfect
could I have galumphed? could you have galumphed? could she have galumphed? could we have galumphed? could you have galumphed? could they have galumphed?
V-ing perfect
could I have been galumphing? could you have been galumphing? could she have been galumphing? could we have been galumphing? could you have been galumphing? could they have been galumphing?
Interro-negative form
Simple form
couldn't I galumph? couldn't you galumph? couldn't she galumph? couldn't we galumph? couldn't you galumph? couldn't they galumph?
V-ing form
couldn't I be galumphing? couldn't you be galumphing? couldn't she be galumphing? couldn't we be galumphing? couldn't you be galumphing? couldn't they be galumphing?
Perfect
couldn't I have galumphed? couldn't you have galumphed? couldn't she have galumphed? couldn't we have galumphed? couldn't you have galumphed? couldn't they have galumphed?
V-ing perfect
couldn't I have been galumphing? couldn't you have been galumphing? couldn't she have been galumphing? couldn't we have been galumphing? couldn't you have been galumphing? couldn't they have been galumphing?