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