I could redye you could redye he could redye we could redye you could redye they could redye
V-ing form
I could be redying you could be redying he could be redying we could be redying you could be redying they could be redying
Perfect
I could have redyed you could have redyed he could have redyed we could have redyed you could have redyed they could have redyed
V-ing perfect
I could have been redying you could have been redying he could have been redying we could have been redying you could have been redying they could have been redying
Negation
Simple form
I couldn't redye you couldn't redye he couldn't redye we couldn't redye you couldn't redye they couldn't redye
V-ing form
I couldn't be redying you couldn't be redying he couldn't be redying we couldn't be redying you couldn't be redying they couldn't be redying
Perfect
I couldn't have redyed you couldn't have redyed he couldn't have redyed we couldn't have redyed you couldn't have redyed they couldn't have redyed
V-ing perfect
I couldn't have been redying you couldn't have been redying he couldn't have been redying we couldn't have been redying you couldn't have been redying they couldn't have been redying
Interrogative form
Simple form
could I redye? could you redye? could he redye? could we redye? could you redye? could they redye?
V-ing form
could I be redying? could you be redying? could he be redying? could we be redying? could you be redying? could they be redying?
Perfect
could I have redyed? could you have redyed? could he have redyed? could we have redyed? could you have redyed? could they have redyed?
V-ing perfect
could I have been redying? could you have been redying? could he have been redying? could we have been redying? could you have been redying? could they have been redying?
Interro-negative form
Simple form
couldn't I redye? couldn't you redye? couldn't he redye? couldn't we redye? couldn't you redye? couldn't they redye?
V-ing form
couldn't I be redying? couldn't you be redying? couldn't he be redying? couldn't we be redying? couldn't you be redying? couldn't they be redying?
Perfect
couldn't I have redyed? couldn't you have redyed? couldn't he have redyed? couldn't we have redyed? couldn't you have redyed? couldn't they have redyed?
V-ing perfect
couldn't I have been redying? couldn't you have been redying? couldn't he have been redying? couldn't we have been redying? couldn't you have been redying? couldn't they have been redying?