I could dissolve you could dissolve he could dissolve we could dissolve you could dissolve they could dissolve
V-ing form
I could be dissolving you could be dissolving he could be dissolving we could be dissolving you could be dissolving they could be dissolving
Perfect
I could have dissolved you could have dissolved he 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 he 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 he 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 he 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 he 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 he 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 he dissolve? could we dissolve? could you dissolve? could they dissolve?
V-ing form
could I be dissolving? could you be dissolving? could he be dissolving? could we be dissolving? could you be dissolving? could they be dissolving?
Perfect
could I have dissolved? could you have dissolved? could he 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 he 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 he 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 he 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 he 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 he have been dissolving? couldn't we have been dissolving? couldn't you have been dissolving? couldn't they have been dissolving?