could rightsise
Regular verb: rightsise - rightsised- rightsised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rightsise
you could rightsise
he could rightsise
we could rightsise
you could rightsise
they could rightsise 	I could be rightsising
you could be rightsising
he could be rightsising
we could be rightsising
you could be rightsising
they could be rightsising	I could have rightsised
you could have rightsised
he could have rightsised
we could have rightsised
you could have rightsised
they could have rightsised	I could have been rightsising
you could have been rightsising
he could have been rightsising
we could have been rightsising
you could have been rightsising
they could have been rightsising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rightsise
you couldn't rightsise
he couldn't rightsise
we couldn't rightsise
you couldn't rightsise
they couldn't rightsise 	I couldn't be rightsising
you couldn't be rightsising
he couldn't be rightsising
we couldn't be rightsising
you couldn't be rightsising
they couldn't be rightsising	I couldn't have rightsised
you couldn't have rightsised
he couldn't have rightsised
we couldn't have rightsised
you couldn't have rightsised
they couldn't have rightsised	I couldn't have been rightsising
you couldn't have been rightsising
he couldn't have been rightsising
we couldn't have been rightsising
you couldn't have been rightsising
they couldn't have been rightsising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rightsise?
could you rightsise?
could he rightsise?
could we rightsise?
could you rightsise?
could they rightsise? 	could I be rightsising?
could you be rightsising?
could he be rightsising?
could we be rightsising?
could you be rightsising?
could they be rightsising? 	could I have rightsised?
could you have rightsised?
could he have rightsised?
could we have rightsised?
could you have rightsised?
could they have rightsised? 	could I have been rightsising?
could you have been rightsising?
could he have been rightsising?
could we have been rightsising?
could you have been rightsising?
could they have been rightsising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rightsise?
couldn't you rightsise?
couldn't he rightsise?
couldn't we rightsise?
couldn't you rightsise?
couldn't they rightsise? 	couldn't I be rightsising?
couldn't you be rightsising?
couldn't he be rightsising?
couldn't we be rightsising?
couldn't you be rightsising?
couldn't they be rightsising? 	couldn't I have rightsised?
couldn't you have rightsised?
couldn't he have rightsised?
couldn't we have rightsised?
couldn't you have rightsised?
couldn't they have rightsised? 	couldn't I have been rightsising?
couldn't you have been rightsising?
couldn't he have been rightsising?
couldn't we have been rightsising?
couldn't you have been rightsising?
couldn't they have been rightsising?