could medicine
Regular verb: medicine - medicined- medicined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could medicine
you could medicine
he could medicine
we could medicine
you could medicine
they could medicine 	I could be medicining
you could be medicining
he could be medicining
we could be medicining
you could be medicining
they could be medicining	I could have medicined
you could have medicined
he could have medicined
we could have medicined
you could have medicined
they could have medicined	I could have been medicining
you could have been medicining
he could have been medicining
we could have been medicining
you could have been medicining
they could have been medicining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't medicine
you couldn't medicine
he couldn't medicine
we couldn't medicine
you couldn't medicine
they couldn't medicine 	I couldn't be medicining
you couldn't be medicining
he couldn't be medicining
we couldn't be medicining
you couldn't be medicining
they couldn't be medicining	I couldn't have medicined
you couldn't have medicined
he couldn't have medicined
we couldn't have medicined
you couldn't have medicined
they couldn't have medicined	I couldn't have been medicining
you couldn't have been medicining
he couldn't have been medicining
we couldn't have been medicining
you couldn't have been medicining
they couldn't have been medicining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I medicine?
could you medicine?
could he medicine?
could we medicine?
could you medicine?
could they medicine? 	could I be medicining?
could you be medicining?
could he be medicining?
could we be medicining?
could you be medicining?
could they be medicining? 	could I have medicined?
could you have medicined?
could he have medicined?
could we have medicined?
could you have medicined?
could they have medicined? 	could I have been medicining?
could you have been medicining?
could he have been medicining?
could we have been medicining?
could you have been medicining?
could they have been medicining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I medicine?
couldn't you medicine?
couldn't he medicine?
couldn't we medicine?
couldn't you medicine?
couldn't they medicine? 	couldn't I be medicining?
couldn't you be medicining?
couldn't he be medicining?
couldn't we be medicining?
couldn't you be medicining?
couldn't they be medicining? 	couldn't I have medicined?
couldn't you have medicined?
couldn't he have medicined?
couldn't we have medicined?
couldn't you have medicined?
couldn't they have medicined? 	couldn't I have been medicining?
couldn't you have been medicining?
couldn't he have been medicining?
couldn't we have been medicining?
couldn't you have been medicining?
couldn't they have been medicining?