could unteach
Irregular verb: unteach - untaught- untaught

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could unteach
you could unteach
she could unteach
we could unteach
you could unteach
they could unteach 	I could be unteaching
you could be unteaching
she could be unteaching
we could be unteaching
you could be unteaching
they could be unteaching	I could have untaught
you could have untaught
she could have untaught
we could have untaught
you could have untaught
they could have untaught	I could have been unteaching
you could have been unteaching
she could have been unteaching
we could have been unteaching
you could have been unteaching
they could have been unteaching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't unteach
you couldn't unteach
she couldn't unteach
we couldn't unteach
you couldn't unteach
they couldn't unteach 	I couldn't be unteaching
you couldn't be unteaching
she couldn't be unteaching
we couldn't be unteaching
you couldn't be unteaching
they couldn't be unteaching	I couldn't have untaught
you couldn't have untaught
she couldn't have untaught
we couldn't have untaught
you couldn't have untaught
they couldn't have untaught	I couldn't have been unteaching
you couldn't have been unteaching
she couldn't have been unteaching
we couldn't have been unteaching
you couldn't have been unteaching
they couldn't have been unteaching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I unteach?
could you unteach?
could she unteach?
could we unteach?
could you unteach?
could they unteach? 	could I be unteaching?
could you be unteaching?
could she be unteaching?
could we be unteaching?
could you be unteaching?
could they be unteaching? 	could I have untaught?
could you have untaught?
could she have untaught?
could we have untaught?
could you have untaught?
could they have untaught? 	could I have been unteaching?
could you have been unteaching?
could she have been unteaching?
could we have been unteaching?
could you have been unteaching?
could they have been unteaching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I unteach?
couldn't you unteach?
couldn't she unteach?
couldn't we unteach?
couldn't you unteach?
couldn't they unteach? 	couldn't I be unteaching?
couldn't you be unteaching?
couldn't she be unteaching?
couldn't we be unteaching?
couldn't you be unteaching?
couldn't they be unteaching? 	couldn't I have untaught?
couldn't you have untaught?
couldn't she have untaught?
couldn't we have untaught?
couldn't you have untaught?
couldn't they have untaught? 	couldn't I have been unteaching?
couldn't you have been unteaching?
couldn't she have been unteaching?
couldn't we have been unteaching?
couldn't you have been unteaching?
couldn't they have been unteaching?