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