could evanesce
Regular verb: evanesce - evanesced- evanesced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could evanesce
you could evanesce
he could evanesce
we could evanesce
you could evanesce
they could evanesce 	I could be evanescing
you could be evanescing
he could be evanescing
we could be evanescing
you could be evanescing
they could be evanescing	I could have evanesced
you could have evanesced
he could have evanesced
we could have evanesced
you could have evanesced
they could have evanesced	I could have been evanescing
you could have been evanescing
he could have been evanescing
we could have been evanescing
you could have been evanescing
they could have been evanescing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't evanesce
you couldn't evanesce
he couldn't evanesce
we couldn't evanesce
you couldn't evanesce
they couldn't evanesce 	I couldn't be evanescing
you couldn't be evanescing
he couldn't be evanescing
we couldn't be evanescing
you couldn't be evanescing
they couldn't be evanescing	I couldn't have evanesced
you couldn't have evanesced
he couldn't have evanesced
we couldn't have evanesced
you couldn't have evanesced
they couldn't have evanesced	I couldn't have been evanescing
you couldn't have been evanescing
he couldn't have been evanescing
we couldn't have been evanescing
you couldn't have been evanescing
they couldn't have been evanescing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I evanesce?
could you evanesce?
could he evanesce?
could we evanesce?
could you evanesce?
could they evanesce? 	could I be evanescing?
could you be evanescing?
could he be evanescing?
could we be evanescing?
could you be evanescing?
could they be evanescing? 	could I have evanesced?
could you have evanesced?
could he have evanesced?
could we have evanesced?
could you have evanesced?
could they have evanesced? 	could I have been evanescing?
could you have been evanescing?
could he have been evanescing?
could we have been evanescing?
could you have been evanescing?
could they have been evanescing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I evanesce?
couldn't you evanesce?
couldn't he evanesce?
couldn't we evanesce?
couldn't you evanesce?
couldn't they evanesce? 	couldn't I be evanescing?
couldn't you be evanescing?
couldn't he be evanescing?
couldn't we be evanescing?
couldn't you be evanescing?
couldn't they be evanescing? 	couldn't I have evanesced?
couldn't you have evanesced?
couldn't he have evanesced?
couldn't we have evanesced?
couldn't you have evanesced?
couldn't they have evanesced? 	couldn't I have been evanescing?
couldn't you have been evanescing?
couldn't he have been evanescing?
couldn't we have been evanescing?
couldn't you have been evanescing?
couldn't they have been evanescing?