should decolourise
Regular verb: decolourise - decolourised- decolourised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should decolourise
you should decolourise
she should decolourise
we should decolourise
you should decolourise
they should decolourise 	I should be decolourising
you should be decolourising
she should be decolourising
we should be decolourising
you should be decolourising
they should be decolourising	I should have decolourised
you should have decolourised
she should have decolourised
we should have decolourised
you should have decolourised
they should have decolourised	I should have been decolourising
you should have been decolourising
she should have been decolourising
we should have been decolourising
you should have been decolourising
they should have been decolourising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not decolourise
you should not decolourise
she should not decolourise
we should not decolourise
you should not decolourise
they should not decolourise 	I should not be decolourising
you should not be decolourising
she should not be decolourising
we should not be decolourising
you should not be decolourising
they should not be decolourising	I should not have decolourised
you should not have decolourised
she should not have decolourised
we should not have decolourised
you should not have decolourised
they should not have decolourised	I should not have been decolourising
you should not have been decolourising
she should not have been decolourising
we should not have been decolourising
you should not have been decolourising
they should not have been decolourising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I decolourise?
should you decolourise?
should she decolourise?
should we decolourise?
should you decolourise?
should they decolourise? 	should I be decolourising?
should you be decolourising?
should she be decolourising?
should we be decolourising?
should you be decolourising?
should they be decolourising? 	should I have decolourised?
should you have decolourised?
should she have decolourised?
should we have decolourised?
should you have decolourised?
should they have decolourised? 	should I have been decolourising?
should you have been decolourising?
should she have been decolourising?
should we have been decolourising?
should you have been decolourising?
should they have been decolourising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not decolourise?
should you not decolourise?
should she not decolourise?
should we not decolourise?
should you not decolourise?
should they not decolourise? 	should I not be decolourising?
should you not be decolourising?
should she not be decolourising?
should we not be decolourising?
should you not be decolourising?
should they not be decolourising? 	should I not have decolourised?
should you not have decolourised?
should she not have decolourised?
should we not have decolourised?
should you not have decolourised?
should they not have decolourised? 	should I not have been decolourising?
should you not have been decolourising?
should she not have been decolourising?
should we not have been decolourising?
should you not have been decolourising?
should they not have been decolourising?