could school
Regular verb: school - schooled- schooled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could school
you could school
she could school
we could school
you could school
they could school 	I could be schooling
you could be schooling
she could be schooling
we could be schooling
you could be schooling
they could be schooling	I could have schooled
you could have schooled
she could have schooled
we could have schooled
you could have schooled
they could have schooled	I could have been schooling
you could have been schooling
she could have been schooling
we could have been schooling
you could have been schooling
they could have been schooling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't school
you couldn't school
she couldn't school
we couldn't school
you couldn't school
they couldn't school 	I couldn't be schooling
you couldn't be schooling
she couldn't be schooling
we couldn't be schooling
you couldn't be schooling
they couldn't be schooling	I couldn't have schooled
you couldn't have schooled
she couldn't have schooled
we couldn't have schooled
you couldn't have schooled
they couldn't have schooled	I couldn't have been schooling
you couldn't have been schooling
she couldn't have been schooling
we couldn't have been schooling
you couldn't have been schooling
they couldn't have been schooling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I school?
could you school?
could she school?
could we school?
could you school?
could they school? 	could I be schooling?
could you be schooling?
could she be schooling?
could we be schooling?
could you be schooling?
could they be schooling? 	could I have schooled?
could you have schooled?
could she have schooled?
could we have schooled?
could you have schooled?
could they have schooled? 	could I have been schooling?
could you have been schooling?
could she have been schooling?
could we have been schooling?
could you have been schooling?
could they have been schooling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I school?
couldn't you school?
couldn't she school?
couldn't we school?
couldn't you school?
couldn't they school? 	couldn't I be schooling?
couldn't you be schooling?
couldn't she be schooling?
couldn't we be schooling?
couldn't you be schooling?
couldn't they be schooling? 	couldn't I have schooled?
couldn't you have schooled?
couldn't she have schooled?
couldn't we have schooled?
couldn't you have schooled?
couldn't they have schooled? 	couldn't I have been schooling?
couldn't you have been schooling?
couldn't she have been schooling?
couldn't we have been schooling?
couldn't you have been schooling?
couldn't they have been schooling?