I can heal you can heal he can heal we can heal you can heal they can heal
V-ing form
I can be healing you can be healing he can be healing we can be healing you can be healing they can be healing
Perfect
I can have healed you can have healed he can have healed we can have healed you can have healed they can have healed
V-ing perfect
I can have been healing you can have been healing he can have been healing we can have been healing you can have been healing they can have been healing
Negation
Simple form
I can't heal you can't heal he can't heal we can't heal you can't heal they can't heal
V-ing form
I can't be healing you can't be healing he can't be healing we can't be healing you can't be healing they can't be healing
Perfect
I can't have healed you can't have healed he can't have healed we can't have healed you can't have healed they can't have healed
V-ing perfect
I can't have been healing you can't have been healing he can't have been healing we can't have been healing you can't have been healing they can't have been healing
Interrogative form
Simple form
can I heal? can you heal? can he heal? can we heal? can you heal? can they heal?
V-ing form
can I be healing? can you be healing? can he be healing? can we be healing? can you be healing? can they be healing?
Perfect
can I have healed? can you have healed? can he have healed? can we have healed? can you have healed? can they have healed?
V-ing perfect
can I have been healing? can you have been healing? can he have been healing? can we have been healing? can you have been healing? can they have been healing?
Interro-negative form
Simple form
can't I heal? can't you heal? can't he heal? can't we heal? can't you heal? can't they heal?
V-ing form
can't I be healing? can't you be healing? can't he be healing? can't we be healing? can't you be healing? can't they be healing?
Perfect
can't I have healed? can't you have healed? can't he have healed? can't we have healed? can't you have healed? can't they have healed?
V-ing perfect
can't I have been healing? can't you have been healing? can't he have been healing? can't we have been healing? can't you have been healing? can't they have been healing?