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