Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could mop. wipe you could mop. wipe he could mop. wipe we could mop. wipe you could mop. wipe they could mop. wipe
V-ing form
I could be mop. wiping you could be mop. wiping he could be mop. wiping we could be mop. wiping you could be mop. wiping they could be mop. wiping
Perfect
I could have mop. wiped you could have mop. wiped he could have mop. wiped we could have mop. wiped you could have mop. wiped they could have mop. wiped
V-ing perfect
I could have been mop. wiping you could have been mop. wiping he could have been mop. wiping we could have been mop. wiping you could have been mop. wiping they could have been mop. wiping
Negation
Simple form
I couldn't mop. wipe you couldn't mop. wipe he couldn't mop. wipe we couldn't mop. wipe you couldn't mop. wipe they couldn't mop. wipe
V-ing form
I couldn't be mop. wiping you couldn't be mop. wiping he couldn't be mop. wiping we couldn't be mop. wiping you couldn't be mop. wiping they couldn't be mop. wiping
Perfect
I couldn't have mop. wiped you couldn't have mop. wiped he couldn't have mop. wiped we couldn't have mop. wiped you couldn't have mop. wiped they couldn't have mop. wiped
V-ing perfect
I couldn't have been mop. wiping you couldn't have been mop. wiping he couldn't have been mop. wiping we couldn't have been mop. wiping you couldn't have been mop. wiping they couldn't have been mop. wiping
Interrogative form
Simple form
could I mop. wipe? could you mop. wipe? could he mop. wipe? could we mop. wipe? could you mop. wipe? could they mop. wipe?
V-ing form
could I be mop. wiping? could you be mop. wiping? could he be mop. wiping? could we be mop. wiping? could you be mop. wiping? could they be mop. wiping?
Perfect
could I have mop. wiped? could you have mop. wiped? could he have mop. wiped? could we have mop. wiped? could you have mop. wiped? could they have mop. wiped?
V-ing perfect
could I have been mop. wiping? could you have been mop. wiping? could he have been mop. wiping? could we have been mop. wiping? could you have been mop. wiping? could they have been mop. wiping?
Interro-negative form
Simple form
couldn't I mop. wipe? couldn't you mop. wipe? couldn't he mop. wipe? couldn't we mop. wipe? couldn't you mop. wipe? couldn't they mop. wipe?
V-ing form
couldn't I be mop. wiping? couldn't you be mop. wiping? couldn't he be mop. wiping? couldn't we be mop. wiping? couldn't you be mop. wiping? couldn't they be mop. wiping?
Perfect
couldn't I have mop. wiped? couldn't you have mop. wiped? couldn't he have mop. wiped? couldn't we have mop. wiped? couldn't you have mop. wiped? couldn't they have mop. wiped?
V-ing perfect
couldn't I have been mop. wiping? couldn't you have been mop. wiping? couldn't he have been mop. wiping? couldn't we have been mop. wiping? couldn't you have been mop. wiping? couldn't they have been mop. wiping?