to understudy
Regular verb: understudy - understudied- understudied

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I do not understudy
you do not understudy
she doesnot understudy
we do not understudy
you do not understudy
they do not understudy 	Iamnot understudying
youarenot understudying
sheisnot understudying
wearenot understudying
youarenot understudying
theyarenot understudying	I did not understudy
you did not understudy
she did not understudy
we did not understudy
you did not understudy
they did not understudy 	Iwasnot understudying
youwerenot understudying
shewasnot understudying
wewerenot understudying
youwerenot understudying
theywerenot understudying	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I have not understudied
you have not understudied
shehasnot understudied
we have not understudied
you have not understudied
they have not understudied	I have not  been understudying
you have not  been understudying
shehasnot  been understudying
we have not  been understudying
you have not  been understudying
they have not  been understudying	I had not understudied
you had not understudied
she had not understudied
we had not understudied
you had not understudied
they had not understudied	I had not been understudying
you had not been understudying
she had not been understudying
we had not been understudying
you had not been understudying
they had not been understudying	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I will not understudy
you will not understudy
she will not understudy
we will not understudy
you will not understudy
they will not understudy 	I will not be understudying
you will not be understudying
she will not be understudying
we will not be understudying
you will not be understudying
they will not be understudying	I will not have understudied
you will not have understudied
she will not have understudied
we will not have understudied
you will not have understudied
they will not have understudied	I will not have been understudying
you will not have been understudying
she will not have been understudying
we will not have been understudying
you will not have been understudying
they will not have been understudying	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I would not understudy
you would not understudy
she would not understudy
we would not understudy
you would not understudy
they would not understudy 	I would not be understudying
you would not be understudying
she would not be understudying
we would not be understudying
you would not be understudying
they would not be understudying	I would not have understudied
you would not have understudied
she would not have understudied
we would not have understudied
you would not have understudied
they would not have understudied	I would not have been understudying
you would not have been understudying
she would not have been understudying
we would not have been understudying
you would not have been understudying
they would not have been understudying	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to understudy 	 	do not understudy
Let's not understudy
do not understudy 	 	

Participle 	
Present 	Past 	 	 	
understudying	understudied