could catechise
Verbo regular: catechise - catechised- catechised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could catechise
you could catechise
she could catechise
we could catechise
you could catechise
they could catechise 	I could be catechising
you could be catechising
she could be catechising
we could be catechising
you could be catechising
they could be catechising	I could have catechised
you could have catechised
she could have catechised
we could have catechised
you could have catechised
they could have catechised	I could have been catechising
you could have been catechising
she could have been catechising
we could have been catechising
you could have been catechising
they could have been catechising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't catechise
you couldn't catechise
she couldn't catechise
we couldn't catechise
you couldn't catechise
they couldn't catechise 	I couldn't be catechising
you couldn't be catechising
she couldn't be catechising
we couldn't be catechising
you couldn't be catechising
they couldn't be catechising	I couldn't have catechised
you couldn't have catechised
she couldn't have catechised
we couldn't have catechised
you couldn't have catechised
they couldn't have catechised	I couldn't have been catechising
you couldn't have been catechising
she couldn't have been catechising
we couldn't have been catechising
you couldn't have been catechising
they couldn't have been catechising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I catechise?
could you catechise?
could she catechise?
could we catechise?
could you catechise?
could they catechise? 	could I be catechising?
could you be catechising?
could she be catechising?
could we be catechising?
could you be catechising?
could they be catechising? 	could I have catechised?
could you have catechised?
could she have catechised?
could we have catechised?
could you have catechised?
could they have catechised? 	could I have been catechising?
could you have been catechising?
could she have been catechising?
could we have been catechising?
could you have been catechising?
could they have been catechising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I catechise?
couldn't you catechise?
couldn't she catechise?
couldn't we catechise?
couldn't you catechise?
couldn't they catechise? 	couldn't I be catechising?
couldn't you be catechising?
couldn't she be catechising?
couldn't we be catechising?
couldn't you be catechising?
couldn't they be catechising? 	couldn't I have catechised?
couldn't you have catechised?
couldn't she have catechised?
couldn't we have catechised?
couldn't you have catechised?
couldn't they have catechised? 	couldn't I have been catechising?
couldn't you have been catechising?
couldn't she have been catechising?
couldn't we have been catechising?
couldn't you have been catechising?
couldn't they have been catechising?