could grout
Regular verb: grout - grouted- grouted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could grout
you could grout
he could grout
we could grout
you could grout
they could grout 	I could be grouting
you could be grouting
he could be grouting
we could be grouting
you could be grouting
they could be grouting	I could have grouted
you could have grouted
he could have grouted
we could have grouted
you could have grouted
they could have grouted	I could have been grouting
you could have been grouting
he could have been grouting
we could have been grouting
you could have been grouting
they could have been grouting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't grout
you couldn't grout
he couldn't grout
we couldn't grout
you couldn't grout
they couldn't grout 	I couldn't be grouting
you couldn't be grouting
he couldn't be grouting
we couldn't be grouting
you couldn't be grouting
they couldn't be grouting	I couldn't have grouted
you couldn't have grouted
he couldn't have grouted
we couldn't have grouted
you couldn't have grouted
they couldn't have grouted	I couldn't have been grouting
you couldn't have been grouting
he couldn't have been grouting
we couldn't have been grouting
you couldn't have been grouting
they couldn't have been grouting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I grout?
could you grout?
could he grout?
could we grout?
could you grout?
could they grout? 	could I be grouting?
could you be grouting?
could he be grouting?
could we be grouting?
could you be grouting?
could they be grouting? 	could I have grouted?
could you have grouted?
could he have grouted?
could we have grouted?
could you have grouted?
could they have grouted? 	could I have been grouting?
could you have been grouting?
could he have been grouting?
could we have been grouting?
could you have been grouting?
could they have been grouting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I grout?
couldn't you grout?
couldn't he grout?
couldn't we grout?
couldn't you grout?
couldn't they grout? 	couldn't I be grouting?
couldn't you be grouting?
couldn't he be grouting?
couldn't we be grouting?
couldn't you be grouting?
couldn't they be grouting? 	couldn't I have grouted?
couldn't you have grouted?
couldn't he have grouted?
couldn't we have grouted?
couldn't you have grouted?
couldn't they have grouted? 	couldn't I have been grouting?
couldn't you have been grouting?
couldn't he have been grouting?
couldn't we have been grouting?
couldn't you have been grouting?
couldn't they have been grouting?