could rumple
Regular verb: rumple - rumpled- rumpled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rumple
you could rumple
she could rumple
we could rumple
you could rumple
they could rumple 	I could be rumpling
you could be rumpling
she could be rumpling
we could be rumpling
you could be rumpling
they could be rumpling	I could have rumpled
you could have rumpled
she could have rumpled
we could have rumpled
you could have rumpled
they could have rumpled	I could have been rumpling
you could have been rumpling
she could have been rumpling
we could have been rumpling
you could have been rumpling
they could have been rumpling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rumple
you couldn't rumple
she couldn't rumple
we couldn't rumple
you couldn't rumple
they couldn't rumple 	I couldn't be rumpling
you couldn't be rumpling
she couldn't be rumpling
we couldn't be rumpling
you couldn't be rumpling
they couldn't be rumpling	I couldn't have rumpled
you couldn't have rumpled
she couldn't have rumpled
we couldn't have rumpled
you couldn't have rumpled
they couldn't have rumpled	I couldn't have been rumpling
you couldn't have been rumpling
she couldn't have been rumpling
we couldn't have been rumpling
you couldn't have been rumpling
they couldn't have been rumpling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rumple?
could you rumple?
could she rumple?
could we rumple?
could you rumple?
could they rumple? 	could I be rumpling?
could you be rumpling?
could she be rumpling?
could we be rumpling?
could you be rumpling?
could they be rumpling? 	could I have rumpled?
could you have rumpled?
could she have rumpled?
could we have rumpled?
could you have rumpled?
could they have rumpled? 	could I have been rumpling?
could you have been rumpling?
could she have been rumpling?
could we have been rumpling?
could you have been rumpling?
could they have been rumpling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rumple?
couldn't you rumple?
couldn't she rumple?
couldn't we rumple?
couldn't you rumple?
couldn't they rumple? 	couldn't I be rumpling?
couldn't you be rumpling?
couldn't she be rumpling?
couldn't we be rumpling?
couldn't you be rumpling?
couldn't they be rumpling? 	couldn't I have rumpled?
couldn't you have rumpled?
couldn't she have rumpled?
couldn't we have rumpled?
couldn't you have rumpled?
couldn't they have rumpled? 	couldn't I have been rumpling?
couldn't you have been rumpling?
couldn't she have been rumpling?
couldn't we have been rumpling?
couldn't you have been rumpling?
couldn't they have been rumpling?