could turf
Regular verb: turf - turfed- turfed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could turf
you could turf
she could turf
we could turf
you could turf
they could turf 	I could be turfing
you could be turfing
she could be turfing
we could be turfing
you could be turfing
they could be turfing	I could have turfed
you could have turfed
she could have turfed
we could have turfed
you could have turfed
they could have turfed	I could have been turfing
you could have been turfing
she could have been turfing
we could have been turfing
you could have been turfing
they could have been turfing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't turf
you couldn't turf
she couldn't turf
we couldn't turf
you couldn't turf
they couldn't turf 	I couldn't be turfing
you couldn't be turfing
she couldn't be turfing
we couldn't be turfing
you couldn't be turfing
they couldn't be turfing	I couldn't have turfed
you couldn't have turfed
she couldn't have turfed
we couldn't have turfed
you couldn't have turfed
they couldn't have turfed	I couldn't have been turfing
you couldn't have been turfing
she couldn't have been turfing
we couldn't have been turfing
you couldn't have been turfing
they couldn't have been turfing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I turf?
could you turf?
could she turf?
could we turf?
could you turf?
could they turf? 	could I be turfing?
could you be turfing?
could she be turfing?
could we be turfing?
could you be turfing?
could they be turfing? 	could I have turfed?
could you have turfed?
could she have turfed?
could we have turfed?
could you have turfed?
could they have turfed? 	could I have been turfing?
could you have been turfing?
could she have been turfing?
could we have been turfing?
could you have been turfing?
could they have been turfing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I turf?
couldn't you turf?
couldn't she turf?
couldn't we turf?
couldn't you turf?
couldn't they turf? 	couldn't I be turfing?
couldn't you be turfing?
couldn't she be turfing?
couldn't we be turfing?
couldn't you be turfing?
couldn't they be turfing? 	couldn't I have turfed?
couldn't you have turfed?
couldn't she have turfed?
couldn't we have turfed?
couldn't you have turfed?
couldn't they have turfed? 	couldn't I have been turfing?
couldn't you have been turfing?
couldn't she have been turfing?
couldn't we have been turfing?
couldn't you have been turfing?
couldn't they have been turfing?