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