I can heal you can heal she can heal we can heal you can heal they can heal
V-ing form
I can be healing you can be healing she can be healing we can be healing you can be healing they can be healing
Perfect
I can have healed you can have healed she 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 she can have been healing we can have been healing you can have been healing they can have been healing
Negation
Simple form
I cannot heal you cannot heal she cannot heal we cannot heal you cannot heal they cannot heal
V-ing form
I cannot be healing you cannot be healing she cannot be healing we cannot be healing you cannot be healing they cannot be healing
Perfect
I cannot have healed you cannot have healed she cannot have healed we cannot have healed you cannot have healed they cannot have healed
V-ing perfect
I cannot have been healing you cannot have been healing she cannot have been healing we cannot have been healing you cannot have been healing they cannot have been healing
Interrogative form
Simple form
can I heal? can you heal? can she heal? can we heal? can you heal? can they heal?
V-ing form
can I be healing? can you be healing? can she be healing? can we be healing? can you be healing? can they be healing?
Perfect
can I have healed? can you have healed? can she 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 she have been healing? can we have been healing? can you have been healing? can they have been healing?
Interro-negative form
Simple form
can I not heal? can you not heal? can she not heal? can we not heal? can you not heal? can they not heal?
V-ing form
can I not be healing? can you not be healing? can she not be healing? can we not be healing? can you not be healing? can they not be healing?
Perfect
can I not have healed? can you not have healed? can she not have healed? can we not have healed? can you not have healed? can they not have healed?
V-ing perfect
can I not have been healing? can you not have been healing? can she not have been healing? can we not have been healing? can you not have been healing? can they not have been healing?