could perplex
Regular verb: perplex - perplexed- perplexed

Affirmation 	
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I could perplex
you could perplex
she could perplex
we could perplex
you could perplex
they could perplex 	I could be perplexing
you could be perplexing
she could be perplexing
we could be perplexing
you could be perplexing
they could be perplexing	I could have perplexed
you could have perplexed
she could have perplexed
we could have perplexed
you could have perplexed
they could have perplexed	I could have been perplexing
you could have been perplexing
she could have been perplexing
we could have been perplexing
you could have been perplexing
they could have been perplexing	

Negation 	
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I couldn't perplex
you couldn't perplex
she couldn't perplex
we couldn't perplex
you couldn't perplex
they couldn't perplex 	I couldn't be perplexing
you couldn't be perplexing
she couldn't be perplexing
we couldn't be perplexing
you couldn't be perplexing
they couldn't be perplexing	I couldn't have perplexed
you couldn't have perplexed
she couldn't have perplexed
we couldn't have perplexed
you couldn't have perplexed
they couldn't have perplexed	I couldn't have been perplexing
you couldn't have been perplexing
she couldn't have been perplexing
we couldn't have been perplexing
you couldn't have been perplexing
they couldn't have been perplexing	

Interrogative form 	
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could I perplex?
could you perplex?
could she perplex?
could we perplex?
could you perplex?
could they perplex? 	could I be perplexing?
could you be perplexing?
could she be perplexing?
could we be perplexing?
could you be perplexing?
could they be perplexing? 	could I have perplexed?
could you have perplexed?
could she have perplexed?
could we have perplexed?
could you have perplexed?
could they have perplexed? 	could I have been perplexing?
could you have been perplexing?
could she have been perplexing?
could we have been perplexing?
could you have been perplexing?
could they have been perplexing? 	

Interro-negative form 	
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couldn't I perplex?
couldn't you perplex?
couldn't she perplex?
couldn't we perplex?
couldn't you perplex?
couldn't they perplex? 	couldn't I be perplexing?
couldn't you be perplexing?
couldn't she be perplexing?
couldn't we be perplexing?
couldn't you be perplexing?
couldn't they be perplexing? 	couldn't I have perplexed?
couldn't you have perplexed?
couldn't she have perplexed?
couldn't we have perplexed?
couldn't you have perplexed?
couldn't they have perplexed? 	couldn't I have been perplexing?
couldn't you have been perplexing?
couldn't she have been perplexing?
couldn't we have been perplexing?
couldn't you have been perplexing?
couldn't they have been perplexing?