could hybridise
Regular verb: hybridise - hybridised- hybridised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hybridise
you could hybridise
he could hybridise
we could hybridise
you could hybridise
they could hybridise 	I could be hybridising
you could be hybridising
he could be hybridising
we could be hybridising
you could be hybridising
they could be hybridising	I could have hybridised
you could have hybridised
he could have hybridised
we could have hybridised
you could have hybridised
they could have hybridised	I could have been hybridising
you could have been hybridising
he could have been hybridising
we could have been hybridising
you could have been hybridising
they could have been hybridising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not hybridise
you could not hybridise
he could not hybridise
we could not hybridise
you could not hybridise
they could not hybridise 	I could not be hybridising
you could not be hybridising
he could not be hybridising
we could not be hybridising
you could not be hybridising
they could not be hybridising	I could not have hybridised
you could not have hybridised
he could not have hybridised
we could not have hybridised
you could not have hybridised
they could not have hybridised	I could not have been hybridising
you could not have been hybridising
he could not have been hybridising
we could not have been hybridising
you could not have been hybridising
they could not have been hybridising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hybridise?
could you hybridise?
could he hybridise?
could we hybridise?
could you hybridise?
could they hybridise? 	could I be hybridising?
could you be hybridising?
could he be hybridising?
could we be hybridising?
could you be hybridising?
could they be hybridising? 	could I have hybridised?
could you have hybridised?
could he have hybridised?
could we have hybridised?
could you have hybridised?
could they have hybridised? 	could I have been hybridising?
could you have been hybridising?
could he have been hybridising?
could we have been hybridising?
could you have been hybridising?
could they have been hybridising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not hybridise?
could you not hybridise?
could he not hybridise?
could we not hybridise?
could you not hybridise?
could they not hybridise? 	could I not be hybridising?
could you not be hybridising?
could he not be hybridising?
could we not be hybridising?
could you not be hybridising?
could they not be hybridising? 	could I not have hybridised?
could you not have hybridised?
could he not have hybridised?
could we not have hybridised?
could you not have hybridised?
could they not have hybridised? 	could I not have been hybridising?
could you not have been hybridising?
could he not have been hybridising?
could we not have been hybridising?
could you not have been hybridising?
could they not have been hybridising?