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