I can medicine you can medicine she can medicine we can medicine you can medicine they can medicine
V-ing form
I can be medicining you can be medicining she can be medicining we can be medicining you can be medicining they can be medicining
Perfect
I can have medicined you can have medicined she can have medicined we can have medicined you can have medicined they can have medicined
V-ing perfect
I can have been medicining you can have been medicining she can have been medicining we can have been medicining you can have been medicining they can have been medicining
Negation
Simple form
I cannot medicine you cannot medicine she cannot medicine we cannot medicine you cannot medicine they cannot medicine
V-ing form
I cannot be medicining you cannot be medicining she cannot be medicining we cannot be medicining you cannot be medicining they cannot be medicining
Perfect
I cannot have medicined you cannot have medicined she cannot have medicined we cannot have medicined you cannot have medicined they cannot have medicined
V-ing perfect
I cannot have been medicining you cannot have been medicining she cannot have been medicining we cannot have been medicining you cannot have been medicining they cannot have been medicining
Interrogative form
Simple form
can I medicine? can you medicine? can she medicine? can we medicine? can you medicine? can they medicine?
V-ing form
can I be medicining? can you be medicining? can she be medicining? can we be medicining? can you be medicining? can they be medicining?
Perfect
can I have medicined? can you have medicined? can she have medicined? can we have medicined? can you have medicined? can they have medicined?
V-ing perfect
can I have been medicining? can you have been medicining? can she have been medicining? can we have been medicining? can you have been medicining? can they have been medicining?
Interro-negative form
Simple form
can I not medicine? can you not medicine? can she not medicine? can we not medicine? can you not medicine? can they not medicine?
V-ing form
can I not be medicining? can you not be medicining? can she not be medicining? can we not be medicining? can you not be medicining? can they not be medicining?
Perfect
can I not have medicined? can you not have medicined? can she not have medicined? can we not have medicined? can you not have medicined? can they not have medicined?
V-ing perfect
can I not have been medicining? can you not have been medicining? can she not have been medicining? can we not have been medicining? can you not have been medicining? can they not have been medicining?