could formalise
Regular verb: formalise - formalised- formalised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could formalise
you could formalise
he could formalise
we could formalise
you could formalise
they could formalise 	I could be formalising
you could be formalising
he could be formalising
we could be formalising
you could be formalising
they could be formalising	I could have formalised
you could have formalised
he could have formalised
we could have formalised
you could have formalised
they could have formalised	I could have been formalising
you could have been formalising
he could have been formalising
we could have been formalising
you could have been formalising
they could have been formalising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't formalise
you couldn't formalise
he couldn't formalise
we couldn't formalise
you couldn't formalise
they couldn't formalise 	I couldn't be formalising
you couldn't be formalising
he couldn't be formalising
we couldn't be formalising
you couldn't be formalising
they couldn't be formalising	I couldn't have formalised
you couldn't have formalised
he couldn't have formalised
we couldn't have formalised
you couldn't have formalised
they couldn't have formalised	I couldn't have been formalising
you couldn't have been formalising
he couldn't have been formalising
we couldn't have been formalising
you couldn't have been formalising
they couldn't have been formalising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I formalise?
could you formalise?
could he formalise?
could we formalise?
could you formalise?
could they formalise? 	could I be formalising?
could you be formalising?
could he be formalising?
could we be formalising?
could you be formalising?
could they be formalising? 	could I have formalised?
could you have formalised?
could he have formalised?
could we have formalised?
could you have formalised?
could they have formalised? 	could I have been formalising?
could you have been formalising?
could he have been formalising?
could we have been formalising?
could you have been formalising?
could they have been formalising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I formalise?
couldn't you formalise?
couldn't he formalise?
couldn't we formalise?
couldn't you formalise?
couldn't they formalise? 	couldn't I be formalising?
couldn't you be formalising?
couldn't he be formalising?
couldn't we be formalising?
couldn't you be formalising?
couldn't they be formalising? 	couldn't I have formalised?
couldn't you have formalised?
couldn't he have formalised?
couldn't we have formalised?
couldn't you have formalised?
couldn't they have formalised? 	couldn't I have been formalising?
couldn't you have been formalising?
couldn't he have been formalising?
couldn't we have been formalising?
couldn't you have been formalising?
couldn't they have been formalising?