could planish
Regular verb: planish - planished- planished

Affirmation 	
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I could planish
you could planish
he could planish
we could planish
you could planish
they could planish 	I could be planishing
you could be planishing
he could be planishing
we could be planishing
you could be planishing
they could be planishing	I could have planished
you could have planished
he could have planished
we could have planished
you could have planished
they could have planished	I could have been planishing
you could have been planishing
he could have been planishing
we could have been planishing
you could have been planishing
they could have been planishing	

Negation 	
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I couldn't planish
you couldn't planish
he couldn't planish
we couldn't planish
you couldn't planish
they couldn't planish 	I couldn't be planishing
you couldn't be planishing
he couldn't be planishing
we couldn't be planishing
you couldn't be planishing
they couldn't be planishing	I couldn't have planished
you couldn't have planished
he couldn't have planished
we couldn't have planished
you couldn't have planished
they couldn't have planished	I couldn't have been planishing
you couldn't have been planishing
he couldn't have been planishing
we couldn't have been planishing
you couldn't have been planishing
they couldn't have been planishing	

Interrogative form 	
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could I planish?
could you planish?
could he planish?
could we planish?
could you planish?
could they planish? 	could I be planishing?
could you be planishing?
could he be planishing?
could we be planishing?
could you be planishing?
could they be planishing? 	could I have planished?
could you have planished?
could he have planished?
could we have planished?
could you have planished?
could they have planished? 	could I have been planishing?
could you have been planishing?
could he have been planishing?
could we have been planishing?
could you have been planishing?
could they have been planishing? 	

Interro-negative form 	
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couldn't I planish?
couldn't you planish?
couldn't he planish?
couldn't we planish?
couldn't you planish?
couldn't they planish? 	couldn't I be planishing?
couldn't you be planishing?
couldn't he be planishing?
couldn't we be planishing?
couldn't you be planishing?
couldn't they be planishing? 	couldn't I have planished?
couldn't you have planished?
couldn't he have planished?
couldn't we have planished?
couldn't you have planished?
couldn't they have planished? 	couldn't I have been planishing?
couldn't you have been planishing?
couldn't he have been planishing?
couldn't we have been planishing?
couldn't you have been planishing?
couldn't they have been planishing?