could root
Regular verb: root - rooted- rooted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could root
you could root
she could root
we could root
you could root
they could root 	I could be rooting
you could be rooting
she could be rooting
we could be rooting
you could be rooting
they could be rooting	I could have rooted
you could have rooted
she could have rooted
we could have rooted
you could have rooted
they could have rooted	I could have been rooting
you could have been rooting
she could have been rooting
we could have been rooting
you could have been rooting
they could have been rooting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't root
you couldn't root
she couldn't root
we couldn't root
you couldn't root
they couldn't root 	I couldn't be rooting
you couldn't be rooting
she couldn't be rooting
we couldn't be rooting
you couldn't be rooting
they couldn't be rooting	I couldn't have rooted
you couldn't have rooted
she couldn't have rooted
we couldn't have rooted
you couldn't have rooted
they couldn't have rooted	I couldn't have been rooting
you couldn't have been rooting
she couldn't have been rooting
we couldn't have been rooting
you couldn't have been rooting
they couldn't have been rooting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I root?
could you root?
could she root?
could we root?
could you root?
could they root? 	could I be rooting?
could you be rooting?
could she be rooting?
could we be rooting?
could you be rooting?
could they be rooting? 	could I have rooted?
could you have rooted?
could she have rooted?
could we have rooted?
could you have rooted?
could they have rooted? 	could I have been rooting?
could you have been rooting?
could she have been rooting?
could we have been rooting?
could you have been rooting?
could they have been rooting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I root?
couldn't you root?
couldn't she root?
couldn't we root?
couldn't you root?
couldn't they root? 	couldn't I be rooting?
couldn't you be rooting?
couldn't she be rooting?
couldn't we be rooting?
couldn't you be rooting?
couldn't they be rooting? 	couldn't I have rooted?
couldn't you have rooted?
couldn't she have rooted?
couldn't we have rooted?
couldn't you have rooted?
couldn't they have rooted? 	couldn't I have been rooting?
couldn't you have been rooting?
couldn't she have been rooting?
couldn't we have been rooting?
couldn't you have been rooting?
couldn't they have been rooting?