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